criyle/codenet-compile-errors huggingface dataset:
Language: C

#include<stdio.h>
int main()
{
int r;
double s,p;
scanf("%d",&r);
p = r*3.141592653589;
s = p*r/2;
printf(""%lf %lf",s,p);
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:9:11: error: 'lf' undeclared (first use in this function)
    9 | printf(""%lf %lf",s,p);
      |           ^~
main.c:9:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:17: warning: missing terminating " character
    9 | printf(""%lf %lf",s,p);
      |                 ^
main.c:9:17: error: missing terminating " character
    9 | printf(""%lf %lf",s,p);
      |                 ^~~~~~~
main.c:9:17: error: expected ')' before 'return'
    9 | printf(""%lf %lf",s,p);
      |       ~         ^
      |                 )
   10 | return 0;
      | ~~~~~~           
main.c:10:10: error: expected ';' before '}' token
   10 | return 0;
      |          ^
      |          ;
   11 | }
      | ~
Language: C

#include<stdio.h>

main(){

double r,area,cir;

scanf("%lf",&r);

area=r*r*3.141592653589;
cir=2.0*r*3.141592653589;

printf("%lf %lf",area,cir);

returan 0;
}

Compiler output:
main.c:3:1: error: return type defaults to 'int' [-Wimplicit-int]
    3 | main(){
      | ^~~~
main.c: In function 'main':
main.c:14:1: error: 'returan' undeclared (first use in this function)
   14 | returan 0;
      | ^~~~~~~
main.c:14:1: note: each undeclared identifier is reported only once for each function it appears in
main.c:14:8: error: expected ';' before numeric constant
   14 | returan 0;
      |        ^~
      |        ;
Language: C

#include <stdio.h>
#include <math.h>
int main(void)
{
   double r;
   scanf("%f",&r)
   printf("%f %f",r*r*M_PI,2*r*M_PI);
   return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:18: error: expected ';' before 'printf'
    6 |    scanf("%f",&r)
      |                  ^
      |                  ;
    7 |    printf("%f %f",r*r*M_PI,2*r*M_PI);
      |    ~~~~~~
Language: C

#include<stdio.h>
#include<math.h>
int main(void)
{
	double r;
	scanf("%lf", &r);
	printf("%lf %lf\n", r*r*P_M, 2*r*PI_M);
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:33: error: 'P_M' undeclared (first use in this function)
    7 |         printf("%lf %lf\n", r*r*P_M, 2*r*PI_M);
      |                                 ^~~
main.c:7:33: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:42: error: 'PI_M' undeclared (first use in this function)
    7 |         printf("%lf %lf\n", r*r*P_M, 2*r*PI_M);
      |                                          ^~~~
Language: C

#include <stdio.h>
#include <math.h>

int main(){
 double r;
 scanf("%f",&r);
 printf("%f %f",(pow(r,2)*m_pi),(r*2*m_pi));
 return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:27: error: 'm_pi' undeclared (first use in this function)
    7 |  printf("%f %f",(pow(r,2)*m_pi),(r*2*m_pi));
      |                           ^~~~
main.c:7:27: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

#include<math.h>

int mian()

{

double r,a,b;

scanf("%lf",&r);

a=r*r*M_PI;

b=2*r*M_PI;



printf("%lf %lf",a,b);

return 0;

}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C

#inciude<stdio.h>

int main(void){


int r;


scanf("%d",&r);


printf("%lf %lf\n",r*r*??,2*r*??);


return 0;


}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #inciude; did you mean #include?
    1 | #inciude<stdio.h>
      |  ^~~~~~~
      |  include
main.c: In function 'main':
main.c:9:1: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    9 | scanf("%d",&r);
      | ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #inciude<stdio.h>
main.c:9:1: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    9 | scanf("%d",&r);
      | ^~~~~
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:12:1: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   12 | printf("%lf %lf\n",r*r*??,2*r*??);
      | ^~~~~~
main.c:12:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:12:1: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:12:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:12:24: error: expected expression before '?' token
   12 | printf("%lf %lf\n",r*r*??,2*r*??);
      |                        ^
main.c:12:31: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
   12 | printf("%lf %lf\n",r*r*??,2*r*??);
Language: C

#inciude<stdio.h>

int main(void){


int r;


scanf("%d",&r);


printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);


return 0;


}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #inciude; did you mean #include?
    1 | #inciude<stdio.h>
      |  ^~~~~~~
      |  include
main.c: In function 'main':
main.c:9:1: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    9 | scanf("%d",&r);
      | ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #inciude<stdio.h>
main.c:9:1: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    9 | scanf("%d",&r);
      | ^~~~~
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:12:1: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   12 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
      | ^~~~~~
main.c:12:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:12:1: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:12:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:12:32: error: expected expression before '?' token
   12 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
      |                                ^
main.c:12:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
   12 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
Language: C

#include<stdio.h>
#include <math.h>

int mian()
{
	double r,pi,a,b;
	scanf("%lf",&r);
	pi=M_PI;
	a=r*r*pi;
	b=2*r*pi;
	
	printf("%lf %lf",a,b);

	return 0;
}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C

#include<stdio.h>
#define _USE_MATH_DEFINES
#include <math.h>

int mian()
{
	double r,pi,a,b;
	scanf("%lf",&r);
	pi=M_PI;
	a=r*r*pi;
	b=2*r*pi;
	
	printf("%lf %lf",a,b);

	return 0;
}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C

#include <stdio.h>
int main(void)
{
	int r,ms,esh;
	scanf("%d",&r);
	ms=r*r*3;
	esh=2*r*3
	printf("%d %d\n",ms,esh);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:18: error: expected ';' before 'printf'
    7 |         esh=2*r*3
      |                  ^
      |                  ;
    8 |         printf("%d %d\n",ms,esh);
      |         ~~~~~~
Language: C

#inciude<stdio.h>

int main(void){

int r;

scanf("%d",&r);

printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);

return 0;

}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #inciude; did you mean #include?
    1 | #inciude<stdio.h>
      |  ^~~~~~~
      |  include
main.c: In function 'main':
main.c:7:1: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    7 | scanf("%d",&r);
      | ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #inciude<stdio.h>
main.c:7:1: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    7 | scanf("%d",&r);
      | ^~~~~
main.c:7:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:9:1: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    9 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
      | ^~~~~~
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:1: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:32: error: expected expression before '?' token
    9 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
      |                                ^
main.c:9:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    9 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
Language: C

#inciude<stdio.h>

int main(void){

int r;

scanf("%d",&r);

printf("%lf %lf\n",r*r*??,2*r*??);

return 0;

}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #inciude; did you mean #include?
    1 | #inciude<stdio.h>
      |  ^~~~~~~
      |  include
main.c: In function 'main':
main.c:7:1: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    7 | scanf("%d",&r);
      | ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #inciude<stdio.h>
main.c:7:1: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    7 | scanf("%d",&r);
      | ^~~~~
main.c:7:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:9:1: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    9 | printf("%lf %lf\n",r*r*??,2*r*??);
      | ^~~~~~
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:1: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:24: error: expected expression before '?' token
    9 | printf("%lf %lf\n",r*r*??,2*r*??);
      |                        ^
main.c:9:31: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    9 | printf("%lf %lf\n",r*r*??,2*r*??);
Language: C

#inciude<stdio.h>

int main(void){

double r;

scanf("%lf",&r);

printf("%lf %lf\n",r*r*??,2*r*??);

return 0;

}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #inciude; did you mean #include?
    1 | #inciude<stdio.h>
      |  ^~~~~~~
      |  include
main.c: In function 'main':
main.c:7:1: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    7 | scanf("%lf",&r);
      | ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #inciude<stdio.h>
main.c:7:1: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    7 | scanf("%lf",&r);
      | ^~~~~
main.c:7:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:9:1: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    9 | printf("%lf %lf\n",r*r*??,2*r*??);
      | ^~~~~~
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:1: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:24: error: expected expression before '?' token
    9 | printf("%lf %lf\n",r*r*??,2*r*??);
      |                        ^
main.c:9:31: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    9 | printf("%lf %lf\n",r*r*??,2*r*??);
Language: C

#inciude<stdio.h>

int main(void){

double r;

printf("%lf %lf\n",r*r*??,2*r*??);

return 0;

}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #inciude; did you mean #include?
    1 | #inciude<stdio.h>
      |  ^~~~~~~
      |  include
main.c: In function 'main':
main.c:7:1: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    7 | printf("%lf %lf\n",r*r*??,2*r*??);
      | ^~~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'printf'
  +++ |+#include <stdio.h>
    1 | #inciude<stdio.h>
main.c:7:1: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    7 | printf("%lf %lf\n",r*r*??,2*r*??);
      | ^~~~~~
main.c:7:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:7:24: error: expected expression before '?' token
    7 | printf("%lf %lf\n",r*r*??,2*r*??);
      |                        ^
main.c:7:31: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",r*r*??,2*r*??);
Language: C

#include<stdio.h>

int main(void){

double r;

scanf("%lf",&r);

printf("%lf %lf\n",r*r*??,2*r*??);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:9:24: error: expected expression before '?' token
    9 | printf("%lf %lf\n",r*r*??,2*r*??);
      |                        ^
main.c:9:31: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    9 | printf("%lf %lf\n",r*r*??,2*r*??);
Language: C

#include<stdio.h>

int main(void){

double r;

printf("%lf %lf\n",r*r*??,2*r*??);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:24: error: expected expression before '?' token
    7 | printf("%lf %lf\n",r*r*??,2*r*??);
      |                        ^
main.c:7:31: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",r*r*??,2*r*??);
Language: C

#include<stdio.h>

int main(void){

double r;

printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:32: error: expected expression before '?' token
    7 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
      |                                ^
main.c:7:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
Language: C

#include<stdio.h>

int main(void){

int r;

printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:32: error: expected expression before '?' token
    7 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
      |                                ^
main.c:7:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",(double)r*r*??,(double)2*r*??);
Language: C

#include<stdio.h>

int main(void){

double r,??;

printf("%lf %lf\n",r*r*??,2*r*??);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:5:10: error: expected identifier or '(' before '?' token
    5 | double r,??;
      |          ^
main.c:7:24: error: expected expression before '?' token
    7 | printf("%lf %lf\n",r*r*??,2*r*??);
      |                        ^
main.c:7:31: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",r*r*??,2*r*??);
Language: C

#include<stdio.h>

int main(void){

double r,??;

printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:5:10: error: expected identifier or '(' before '?' token
    5 | double r,??;
      |          ^
main.c:7:32: error: expected expression before '?' token
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
      |                                ^
main.c:7:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
Language: C

#include<stdio.h>

int main(void){

double r;

printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:32: error: expected expression before '?' token
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
      |                                ^
main.c:7:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
Language: C

#include<stdio.h>

int main(void){

double r;

printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);

return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:32: error: expected expression before '?' token
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
      |                                ^
main.c:7:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
Language: C

#include<stdio.h>

int main(void){

int ??;

double r;

printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);

return 0; 
}

 

Compiler output:
main.c: In function 'main':
main.c:5:5: error: expected identifier or '(' before '?' token
    5 | int ??;
      |     ^
main.c:9:32: error: expected expression before '?' token
    9 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
      |                                ^
main.c:9:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    9 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
Language: C

#include<stdio.h>

int main(void){

int ??,r;

printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);

return 0; 
}

 

Compiler output:
main.c: In function 'main':
main.c:5:5: error: expected identifier or '(' before '?' token
    5 | int ??,r;
      |     ^
main.c:7:20: error: 'r' undeclared (first use in this function)
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
      |                    ^
main.c:7:20: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:32: error: expected expression before '?' token
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
      |                                ^
main.c:7:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
Language: C

#include<stdio.h>

int main(void){

int r;
double ??;
??=3.14;
printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);

return 0; 
}

 

Compiler output:
main.c: In function 'main':
main.c:6:8: error: expected identifier or '(' before '?' token
    6 | double ??;
      |        ^
main.c:7:1: warning: trigraph ??= ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | ??=3.14;
main.c:7:1: error: expected expression before '?' token
    7 | ??=3.14;
      | ^
main.c:8:32: error: expected expression before '?' token
    8 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
      |                                ^
main.c:8:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    8 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
Language: C

#include<stdio.h>

int main(void){

int r;
double ??;
printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);

return 0; 
}

 

Compiler output:
main.c: In function 'main':
main.c:6:8: error: expected identifier or '(' before '?' token
    6 | double ??;
      |        ^
main.c:7:32: error: expected expression before '?' token
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
      |                                ^
main.c:7:47: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    7 | printf("%lf %lf\n",r*r*(double)??,2*r*(double)??);
Language: C

#include<stdio.h>

int main(void)

{

int r;

double a;

a=3.14;

printf("%lf %lf\n",r*r*a,2*r*a);

return o;

}

Compiler output:
main.c: In function 'main':
main.c:15:8: error: 'o' undeclared (first use in this function)
   15 | return o;
      |        ^
main.c:15:8: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(void){

double r;

printf("%lf %lf\n",(double)r*r*M-PI,2*(double)r*M-PI);

return 0;

 }

Compiler output:
main.c: In function 'main':
main.c:7:32: error: 'M' undeclared (first use in this function)
    7 | printf("%lf %lf\n",(double)r*r*M-PI,2*(double)r*M-PI);
      |                                ^
main.c:7:32: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:34: error: 'PI' undeclared (first use in this function)
    7 | printf("%lf %lf\n",(double)r*r*M-PI,2*(double)r*M-PI);
      |                                  ^~
Language: C

#include <stdio.h>

#include <math.h>

main(void){

double r;

scanf("%lf",&r);

s=r*r*M_PI;

p=2*r*M_PI;

printf("%lf %lf\n",s,p);

return 0;

};

Compiler output:
main.c:5:1: error: return type defaults to 'int' [-Wimplicit-int]
    5 | main(void){
      | ^~~~
main.c: In function 'main':
main.c:11:1: error: 's' undeclared (first use in this function)
   11 | s=r*r*M_PI;
      | ^
main.c:11:1: note: each undeclared identifier is reported only once for each function it appears in
main.c:13:1: error: 'p' undeclared (first use in this function)
   13 | p=2*r*M_PI;
      | ^
Language: C

#include<stdio.h>

int main(void)

{

int r;

double ??;

??=3.14;

scanf("%d",&r);

printf("%lf.5 %d",r*r*??,4*r);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:9:8: error: expected identifier or '(' before '?' token
    9 | double ??;
      |        ^
main.c:11:1: warning: trigraph ??= ignored, use -trigraphs to enable [-Wtrigraphs]
   11 | ??=3.14;
main.c:11:1: error: expected expression before '?' token
   11 | ??=3.14;
      | ^
main.c:15:23: error: expected expression before '?' token
   15 | printf("%lf.5 %d",r*r*??,4*r);
      |                       ^
Language: C

#include<stdio.h>

int main(void)

{

int r;

double ??;

??=3.14;

scanf("%d",&r);

printf("%.5lf %d\n",r*r*??,4*r);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:9:8: error: expected identifier or '(' before '?' token
    9 | double ??;
      |        ^
main.c:11:1: warning: trigraph ??= ignored, use -trigraphs to enable [-Wtrigraphs]
   11 | ??=3.14;
main.c:11:1: error: expected expression before '?' token
   11 | ??=3.14;
      | ^
main.c:15:25: error: expected expression before '?' token
   15 | printf("%.5lf %d\n",r*r*??,4*r);
      |                         ^
Language: C

#include <stdio.h>

int main(void)

{

double r,x,y,z;

z=3.141592





scanf("%lf\n",&r);

x=z*r*r;

y=2*r*z;

printf("%lf %lf\n",x,y);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:9:11: error: expected ';' before 'scanf'
    9 | z=3.141592
      |           ^
      |           ;
......
   15 | scanf("%lf\n",&r);
      | ~~~~~
Language: C

#include <stdio.h>

int main(void)

{


int r;


double x,y;


z=3.141592;


scanf("%lf\n",&r);

x=z*(double)r*(double)r;

y=2*(double)r*z;

printf("%lf %lf\n",x,y);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:14:1: error: 'z' undeclared (first use in this function)
   14 | z=3.141592;
      | ^
main.c:14:1: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(void)


{


 int r;


 scanf("%d",&r);


 printf("%d %d",r*r*3.14,2*r*3.14):


 return 0;


}

Compiler output:
main.c: In function 'main':
main.c:15:35: error: expected ';' before ':' token
   15 |  printf("%d %d",r*r*3.14,2*r*3.14):
      |                                   ^
      |                                   ;
Language: C

#include<stdio.h>

int main(void)


{


 double r;


 scanf("%lf",&r);


 printf("%lf %lf",r*r*3.14,2*r*3.14):


 return 0;


}

Compiler output:
main.c: In function 'main':
main.c:15:37: error: expected ';' before ':' token
   15 |  printf("%lf %lf",r*r*3.14,2*r*3.14):
      |                                     ^
      |                                     ;
Language: C

#include<stdio.h>

int main(void)


{


 double r;


 scanf("%lf",&r);


 printf("%f %f",r*r*3.14,2*r*3.14):


 return 0;


}

Compiler output:
main.c: In function 'main':
main.c:15:35: error: expected ';' before ':' token
   15 |  printf("%f %f",r*r*3.14,2*r*3.14):
      |                                   ^
      |                                   ;
Language: C

#include<stdio.h>

int main(void)


{


 double r;


 scanf("%lf",&r);


 printf("%.5f %.5f",r*r*3.14,2*r*3.14):


 return 0;


}

Compiler output:
main.c: In function 'main':
main.c:15:39: error: expected ';' before ':' token
   15 |  printf("%.5f %.5f",r*r*3.14,2*r*3.14):
      |                                       ^
      |                                       ;
Language: C

#include<stdio.h>

int main(void)


{


 double r;


 scanf("%lf",&r);


 printf("%lf %lf",r*r*3.14 2*r*3.14);


 return 0;


}

Compiler output:
main.c: In function 'main':
main.c:15:27: error: expected ')' before numeric constant
   15 |  printf("%lf %lf",r*r*3.14 2*r*3.14);
      |        ~                  ^~
      |                           )
Language: C

#include<stdio.h>

int main(void)


{

 int r;

 scanf("%d",&r);

 printf("%lf,%lf",(double)r*r*3.14,);

 printf(" %lf",(double)2*r*3.14)

 return 0

}

Compiler output:
main.c: In function 'main':
main.c:12:36: error: expected expression before ')' token
   12 |  printf("%lf,%lf",(double)r*r*3.14,);
      |                                    ^
main.c:14:33: error: expected ';' before 'return'
   14 |  printf(" %lf",(double)2*r*3.14)
      |                                 ^
      |                                 ;
   15 | 
   16 |  return 0
      |  ~~~~~~
Language: C

#include<stdio.h>

int main(void)


{

 int r;

 scanf("%d",&r);

 printf("%lf",(double)r*r*3.14,);

 printf(" %lf",(double)2*r*3.14)

 return 0

}

Compiler output:
main.c: In function 'main':
main.c:12:32: error: expected expression before ')' token
   12 |  printf("%lf",(double)r*r*3.14,);
      |                                ^
main.c:14:33: error: expected ';' before 'return'
   14 |  printf(" %lf",(double)2*r*3.14)
      |                                 ^
      |                                 ;
   15 | 
   16 |  return 0
      |  ~~~~~~
Language: C

#include<stdio.h>

int main(void)


{

 int r;

 scanf("%d",&r);

 printf("%lf",(double)r*r*3.14,);

 printf(" %lf",2*r*3.14)

 return 0

}

Compiler output:
main.c: In function 'main':
main.c:12:32: error: expected expression before ')' token
   12 |  printf("%lf",(double)r*r*3.14,);
      |                                ^
main.c:14:25: error: expected ';' before 'return'
   14 |  printf(" %lf",2*r*3.14)
      |                         ^
      |                         ;
   15 | 
   16 |  return 0
      |  ~~~~~~
Language: C

#include<stdio.h>

int main(void)


{

 int r;

 scanf("%d",&r);

 printf("%lf",(double)r*r*3.14,);

 printf(" %lf",(double)2*r*3.14)

 return 0;

}

Compiler output:
main.c: In function 'main':
main.c:12:32: error: expected expression before ')' token
   12 |  printf("%lf",(double)r*r*3.14,);
      |                                ^
main.c:14:33: error: expected ';' before 'return'
   14 |  printf(" %lf",(double)2*r*3.14)
      |                                 ^
      |                                 ;
   15 | 
   16 |  return 0;
      |  ~~~~~~
Language: C

#include<stdio.h>

int main(void)


{

 int r;

 scanf("%d",&r);

 printf("%lf",(double)r*r*3.14,);

 printf(" %lf",(double)2*r*3.14);

 return 0;

}

Compiler output:
main.c: In function 'main':
main.c:12:32: error: expected expression before ')' token
   12 |  printf("%lf",(double)r*r*3.14,);
      |                                ^
Language: C

#include<stdio.h>

int main(void)

{

 int r;

 scanf("%d",&r);

 printf("%lf",(double)r*r*3.14,);

 printf(" %lf",(double)2*r*3.14);

 return 0;

}

Compiler output:
main.c: In function 'main':
main.c:11:32: error: expected expression before ')' token
   11 |  printf("%lf",(double)r*r*3.14,);
      |                                ^
Language: C

#include<stdio.h>

int main(void)

{

 int r;

 scanf("%d",&r);

 printf("%lf",(double)r*r*3.14,);

 printf(" %lf\n",(double)2*r*3.14);

 return 0;

}

Compiler output:
main.c: In function 'main':
main.c:11:32: error: expected expression before ')' token
   11 |  printf("%lf",(double)r*r*3.14,);
      |                                ^
Language: C

#include <stdio.h>

int main(void)

{ 

 double r;


 scanf("%lf"&r);


printf("%lf %lf\n",r*r*3.14159265359,2*r*3.14159265359);





return 0;





}


 

Compiler output:
main.c: In function 'main':
main.c:10:13: error: invalid operands to binary & (have 'char *' and 'double')
   10 |  scanf("%lf"&r);
      |        ~~~~~^
      |        |
      |        char *
Language: C

#include <stdio.h>
int main(void)
{
  int r;

  scanf("%d",&r);

  printf("%d %d\n",r*r*3.14 2*r*3.14);

  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:28: error: expected ')' before numeric constant
    8 |   printf("%d %d\n",r*r*3.14 2*r*3.14);
      |         ~                  ^~
      |                            )
Language: C

#include<stdio.h>

int main(void)

{

double r,menseki,ensyuu;

scanf("%d",&r);

menseki=r*3.14*r;

ensyuu=2*3.14*r;

printf("%d %d\n"menseki,ensyuu);


return 0;


}

Compiler output:
main.c: In function 'main':
main.c:15:17: error: expected ')' before 'menseki'
   15 | printf("%d %d\n"menseki,ensyuu);
      |       ~         ^~~~~~~
      |                 )
Language: C

#include<stdio.h>

int main(void)

{

double r,menseki,ensyuu;

scanf("%lf",&r);

menseki=3.14*r*r;

ensyuu=2*3.14*r;

printf("%d %d\n"menseki,ensyuu);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:15:17: error: expected ')' before 'menseki'
   15 | printf("%d %d\n"menseki,ensyuu);
      |       ~         ^~~~~~~
      |                 )
Language: C

#include<stdio.h>

int main(void){


double r,menseki,ensyu;


scanf("%lf",&r);


menseki=r*r*3.14;


ensyu=2*r*3.14;


printf("%lf %lf\n",menseki ensyu);


return 0;


}

Compiler output:
main.c: In function 'main':
main.c:18:27: error: expected ')' before 'ensyu'
   18 | printf("%lf %lf\n",menseki ensyu);
      |       ~                   ^~~~~~
      |                           )
Language: C

#include<stdio.h>

int main (void) {


double r,a,b;


scanf("%lf",&r);


a=3.14*r*r;


b=2*3.14*r;


printf("%d %d\n,a,b);


return 0;


}

Compiler output:
main.c: In function 'main':
main.c:18:8: warning: missing terminating " character
   18 | printf("%d %d\n,a,b);
      |        ^
main.c:18:8: error: missing terminating " character
   18 | printf("%d %d\n,a,b);
      |        ^~~~~~~~~~~~~~
main.c:21:1: error: expected expression before 'return'
   21 | return 0;
      | ^~~~~~
main.c:21:10: error: expected ';' before '}' token
   21 | return 0;
      |          ^
      |          ;
......
   24 | }
      | ~
Language: C

#include<stdio.h>

int main(void) {


double r,a,b;


scanf("%lf",&r);


a=3.14*r*r;


b=2*3.14*r;


printf("%d %d\n,a,b);


return 0;


}

Compiler output:
main.c: In function 'main':
main.c:18:8: warning: missing terminating " character
   18 | printf("%d %d\n,a,b);
      |        ^
main.c:18:8: error: missing terminating " character
   18 | printf("%d %d\n,a,b);
      |        ^~~~~~~~~~~~~~
main.c:21:1: error: expected expression before 'return'
   21 | return 0;
      | ^~~~~~
main.c:21:10: error: expected ';' before '}' token
   21 | return 0;
      |          ^
      |          ;
......
   24 | }
      | ~
Language: C

#include<stdio.h>

int main(void){


double r,menseki,ensyu;


scanf("%lf",&r);


menseki=r*r*3.14;


ensyu=2*r*3.14;


printf("%d %d\n",menseki ensyu);


return 0;


}

Compiler output:
main.c: In function 'main':
main.c:18:25: error: expected ')' before 'ensyu'
   18 | printf("%d %d\n",menseki ensyu);
      |       ~                 ^~~~~~
      |                         )
Language: C




#include<stdio.h>

#define pi 3.14 int main(void)

{

double r,a,b;

printf("???????????\?????????????????????");

scanf("%lf",&r);

a=2*r*pi;

printf("?????¨???%lf",a);

b=r*r*pi;

printf("??¢??????%lf\n",b); 

return 0;

}

Compiler output:
main.c:8:1: error: expected identifier or '(' before '{' token
    8 | {
      | ^
Language: C




#include<stdio.h>

#define pi 3.14 int main(void)

{

double r,a,b;

scanf("%lf",&r);

a=2*r*pi;

printf("%lf",a);

b=r*r*pi;

printf("%lf\n",b); 

return 0;

}

Compiler output:
main.c:8:1: error: expected identifier or '(' before '{' token
    8 | {
      | ^
Language: C

#include<stdio.h>
int main(void)
{
int r,x ;
x = 3.1415926535
scanf("%d",&r);
printf("%d %d\n",r*r*x,2*r*x);
return 0 ;
}

Compiler output:
main.c: In function 'main':
main.c:5:17: error: expected ';' before 'scanf'
    5 | x = 3.1415926535
      |                 ^
      |                 ;
    6 | scanf("%d",&r);
      | ~~~~~
Language: C

#include<stdio.h>
int main(void)
{
int r,x ;

scanf("%d",&r);
x = 3.1415926535
printf("%d %d\n",r*r*x,2*r*x);
return 0 ;
}

Compiler output:
main.c: In function 'main':
main.c:7:17: error: expected ';' before 'printf'
    7 | x = 3.1415926535
      |                 ^
      |                 ;
    8 | printf("%d %d\n",r*r*x,2*r*x);
      | ~~~~~~
Language: C

#include<stdio.h>
int main(void)
{
int r,?? ;

scanf("%d",&r);

printf("%d %d\n",r*r*??,2*r*??);
return 0 ;
}

Compiler output:
main.c: In function 'main':
main.c:4:7: error: expected identifier or '(' before '?' token
    4 | int r,?? ;
      |       ^
main.c:8:22: error: expected expression before '?' token
    8 | printf("%d %d\n",r*r*??,2*r*??);
      |                      ^
main.c:8:29: warning: trigraph ??) ignored, use -trigraphs to enable [-Wtrigraphs]
    8 | printf("%d %d\n",r*r*??,2*r*??);
Language: C

#include<stdio.h>
int main(void)
{
int r, ;

scanf("%d",&r);

printf("%d %d\n",r*r*3.14159265359,2*r*3.14159265359);
return 0 ;
}

Compiler output:
main.c: In function 'main':
main.c:4:8: error: expected identifier or '(' before ';' token
    4 | int r, ;
      |        ^
Language: C

#include<stdio.h>
int main(void)
{
double r,pai ;
pai = 3.14159265359

scanf("%d",&r);

printf("%d %d\n",r*r*pai,2*r*pai);
return 0 ;
}

Compiler output:
main.c: In function 'main':
main.c:5:20: error: expected ';' before 'scanf'
    5 | pai = 3.14159265359
      |                    ^
      |                    ;
    6 | 
    7 | scanf("%d",&r);
      | ~~~~~
Language: C

#include<stdio.h>

int main(void){


double r;


scanf("%lf",&r);


printf("%lf %lf\n",r*r*3.14159265358979,2*r*3.14159265358979);


return 0


}

Compiler output:
main.c: In function 'main':
main.c:15:9: error: expected ';' before '}' token
   15 | return 0
      |         ^
      |         ;
......
   18 | }
      | ~
Language: C

#include<stdio.h>

#include<math.h>


int main(void)


{



double r,x;

scanf("%lf",&r);
x=M_PI;

printf("%lf %lf",r*r*x.2*r*x);


return 0;


}

Compiler output:
main.c: In function 'main':
main.c:18:23: error: expected ')' before numeric constant
   18 | printf("%lf %lf",r*r*x.2*r*x);
      |       ~               ^~
      |                       )
Language: C

#include<stdio.h>

#include<math.h>


int main(void)


{


double r,x;


x=M_PI;


scanf("%lf",&r);


printf("%lf %lf",r*r*x.2*r*x);


return 0;


}

Compiler output:
main.c: In function 'main':
main.c:21:23: error: expected ')' before numeric constant
   21 | printf("%lf %lf",r*r*x.2*r*x);
      |       ~               ^~
      |                       )
Language: C

#include<stdio.h>

#include<math.h>

int main(void)

{

double r;

double s;


double l;


s=M_PIxr*r;

l=2*M_PI*r;

printf("%lf %lf",s,l);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:17:3: error: 'M_PIxr' undeclared (first use in this function); did you mean 'M_PI_4'?
   17 | s=M_PIxr*r;
      |   ^~~~~~
      |   M_PI_4
main.c:17:3: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
int main(void)
{
  double r;

  scanf("%d",&r);

  printf("%lf %lf\n",(double)r*(double)r*(double)3.14,(doublr)2*(double)r*(double)3.14);

  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:56: error: 'doublr' undeclared (first use in this function); did you mean 'double'?
    8 |   printf("%lf %lf\n",(double)r*(double)r*(double)3.14,(doublr)2*(double)r*(double)3.14);
      |                                                        ^~~~~~
      |                                                        double
main.c:8:56: note: each undeclared identifier is reported only once for each function it appears in
main.c:8:63: error: expected ')' before numeric constant
    8 |   printf("%lf %lf\n",(double)r*(double)r*(double)3.14,(doublr)2*(double)r*(double)3.14);
      |         ~                                                     ^
      |                                                               )
Language: C

#include<stdio.h>

#include<math.h>

int main(void)

{

double r;

double s;


double l;


scanf("%lf",&r);


s=M_PIxr*r;

l=2*M_PI*r;

printf("%lf %lf",s,l);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:20:3: error: 'M_PIxr' undeclared (first use in this function); did you mean 'M_PI_4'?
   20 | s=M_PIxr*r;
      |   ^~~~~~
      |   M_PI_4
main.c:20:3: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#define_USE_MATH_DEFINES


#include<stdio.h>

#include<math.h>

int main(void)

{

double r;

double s;


double l;


scanf("%lf",&r);


s=M_PIxr*r;

l=2*M_PI*r;

printf("%lf %lf",s,l);

return 0;

}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #define_USE_MATH_DEFINES
    1 | #define_USE_MATH_DEFINES
      |  ^~~~~~~~~~~~~~~~~~~~~~~
main.c: In function 'main':
main.c:23:3: error: 'M_PIxr' undeclared (first use in this function); did you mean 'M_PI_4'?
   23 | s=M_PIxr*r;
      |   ^~~~~~
      |   M_PI_4
main.c:23:3: note: each undeclared identifier is reported only once for each function it appears in
Language: C


#include<stdio.h>

int main(void)

{

double r,a,b;

scanf("%lf",&r);

a=2*r*pi;

b=r*r*pi;

printf("%lf %lf\n",a,b);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:12:7: error: 'pi' undeclared (first use in this function)
   12 | a=2*r*pi;
      |       ^~
main.c:12:7: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(void)


{


doubler,m,n;


scanf("%d"&r);


m=3.14*r*r;


n=2*3.14*r;


printf("&d %d\n",m,n);


retrn 0;


}

Compiler output:
main.c: In function 'main':
main.c:9:1: error: 'doubler' undeclared (first use in this function); did you mean 'double'?
    9 | doubler,m,n;
      | ^~~~~~~
      | double
main.c:9:1: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:9: error: 'm' undeclared (first use in this function)
    9 | doubler,m,n;
      |         ^
main.c:9:11: error: 'n' undeclared (first use in this function)
    9 | doubler,m,n;
      |           ^
main.c:12:12: error: 'r' undeclared (first use in this function)
   12 | scanf("%d"&r);
      |            ^
main.c:24:1: error: 'retrn' undeclared (first use in this function)
   24 | retrn 0;
      | ^~~~~
main.c:24:6: error: expected ';' before numeric constant
   24 | retrn 0;
      |      ^~
      |      ;
Language: C

#include<stdio.h>

int main(void){


double r,m,n;


scanf("%d",&r);


m=3.14*r*r;


n=2*3.14*r;


printf("&d %d\n",m,n);


return0;


}

Compiler output:
main.c: In function 'main':
main.c:21:1: error: 'return0' undeclared (first use in this function)
   21 | return0;
      | ^~~~~~~
main.c:21:1: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
int main()
{
    double r;
    scanf("%lf,&r);
    printf(%f %f\n",r*r*3.1415926536,2*r*3.1415926536);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:11: warning: missing terminating " character
    5 |     scanf("%lf,&r);
      |           ^
main.c:5:11: error: missing terminating " character
    5 |     scanf("%lf,&r);
      |           ^~~~~~~~~
main.c:6:12: error: expected expression before '%' token
    6 |     printf(%f %f\n",r*r*3.1415926536,2*r*3.1415926536);
      |            ^
main.c:6:17: error: stray '\' in program
    6 |     printf(%f %f\n",r*r*3.1415926536,2*r*3.1415926536);
      |                 ^
main.c:6:19: warning: missing terminating " character
    6 |     printf(%f %f\n",r*r*3.1415926536,2*r*3.1415926536);
      |                   ^
main.c:6:19: error: missing terminating " character
    6 |     printf(%f %f\n",r*r*3.1415926536,2*r*3.1415926536);
      |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
main.c:7:14: error: expected ')' before '}' token
    7 |     return 0;
      |              ^
      |              )
    8 | }
      | ~             
main.c:5:10: note: to match this '('
    5 |     scanf("%lf,&r);
      |          ^
main.c:7:14: error: expected ';' before '}' token
    7 |     return 0;
      |              ^
      |              ;
    8 | }
      | ~
Language: C

#include<stdio.h>
int main()
{
    double r,p=3.14159265359
    scanf("%lf,&r);
    printf("%f %f\n",r*r*p,2*r*p);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:5: error: expected ',' or ';' before 'scanf'
    5 |     scanf("%lf,&r);
      |     ^~~~~
main.c:5:11: warning: missing terminating " character
    5 |     scanf("%lf,&r);
      |           ^
main.c:5:11: error: missing terminating " character
    5 |     scanf("%lf,&r);
      |           ^~~~~~~~~
Language: C

#include<stdio.h>
int main()
{
    double r,p
    p=3.14159265359
    scanf("%lf,&r);
    printf("%f %f\n",r*r*p,2*r*p);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'p'
    5 |     p=3.14159265359
      |     ^
main.c:6:11: warning: missing terminating " character
    6 |     scanf("%lf,&r);
      |           ^
main.c:6:11: error: missing terminating " character
    6 |     scanf("%lf,&r);
      |           ^~~~~~~~~
Language: C

#include<stdio.h>
int main()
{
    double r,p
    p=3.14159265359;
    scanf("%lf,&r);
    printf("%f %f\n",r*r*p,2*r*p);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'p'
    5 |     p=3.14159265359;
      |     ^
main.c:6:11: warning: missing terminating " character
    6 |     scanf("%lf,&r);
      |           ^
main.c:6:11: error: missing terminating " character
    6 |     scanf("%lf,&r);
      |           ^~~~~~~~~
main.c:7:26: error: 'p' undeclared (first use in this function)
    7 |     printf("%f %f\n",r*r*p,2*r*p);
      |                          ^
main.c:7:26: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:34: error: expected ')' before ';' token
    7 |     printf("%f %f\n",r*r*p,2*r*p);
      |                                  ^
      |                                  )
main.c:6:10: note: to match this '('
    6 |     scanf("%lf,&r);
      |          ^
main.c:8:14: error: expected ';' before '}' token
    8 |     return 0;
      |              ^
      |              ;
    9 | }
      | ~
Language: C

#include<stdio.h>
int main()
{
    double r,p
    p=3.14159265359;
    scanf("%lf",&r);
    printf("%f %f\n",r*r*p,2*r*p);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:5: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'p'
    5 |     p=3.14159265359;
      |     ^
main.c:7:26: error: 'p' undeclared (first use in this function)
    7 |     printf("%f %f\n",r*r*p,2*r*p);
      |                          ^
main.c:7:26: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(void){

double r,m,n;

scanf("%d",&r);

m=3.14*r*r;

n=2*3.14*r;

printf("%d %d\n",m,n);

return0;

}

Compiler output:
main.c: In function 'main':
main.c:15:1: error: 'return0' undeclared (first use in this function)
   15 | return0;
      | ^~~~~~~
main.c:15:1: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(void){

double r,m,n;

scanf("%d",&r);

m=3.14*r*r;

n=2*3.14*r;

printf("%lf %lf\n",m,n);

return0;

}

Compiler output:
main.c: In function 'main':
main.c:15:1: error: 'return0' undeclared (first use in this function)
   15 | return0;
      | ^~~~~~~
main.c:15:1: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(void){

double r,m,n;

scanf("%lf",&r);

m=3.14*r*r;

n=2*3.14*r;

printf("%lf %lf\n",m,n);

return0;

}

Compiler output:
main.c: In function 'main':
main.c:15:1: error: 'return0' undeclared (first use in this function)
   15 | return0;
      | ^~~~~~~
main.c:15:1: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(void)

{

doubler,m,n;

scanf("%d"&r);

m=3.14*r*r;

n=2*3.14*r;

printf("&lf %lf\n",m,n);

retrn 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:1: error: 'doubler' undeclared (first use in this function); did you mean 'double'?
    7 | doubler,m,n;
      | ^~~~~~~
      | double
main.c:7:1: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:9: error: 'm' undeclared (first use in this function)
    7 | doubler,m,n;
      |         ^
main.c:7:11: error: 'n' undeclared (first use in this function)
    7 | doubler,m,n;
      |           ^
main.c:9:12: error: 'r' undeclared (first use in this function)
    9 | scanf("%d"&r);
      |            ^
main.c:17:1: error: 'retrn' undeclared (first use in this function)
   17 | retrn 0;
      | ^~~~~
main.c:17:6: error: expected ';' before numeric constant
   17 | retrn 0;
      |      ^~
      |      ;
Language: C

#include<stdio.h>

int main(void)

{

doubler,m,n;

scanf("%d"&r);

m=3.14*r*r;

n=2*3.14*r;

printf("&lf %lf\n",m,n);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:1: error: 'doubler' undeclared (first use in this function); did you mean 'double'?
    7 | doubler,m,n;
      | ^~~~~~~
      | double
main.c:7:1: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:9: error: 'm' undeclared (first use in this function)
    7 | doubler,m,n;
      |         ^
main.c:7:11: error: 'n' undeclared (first use in this function)
    7 | doubler,m,n;
      |           ^
main.c:9:12: error: 'r' undeclared (first use in this function)
    9 | scanf("%d"&r);
      |            ^
Language: C

#include<stdio.h>

int main(void)
{
   double r,m,n;

   scanf("%d",&r);

   m=3.14159265359*r*r;

   n=2*3.14159265359*r

   printf("%d %d\n",m,n);

   return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:23: error: expected ';' before 'printf'
   11 |    n=2*3.14159265359*r
      |                       ^
      |                       ;
   12 | 
   13 |    printf("%d %d\n",m,n);
      |    ~~~~~~
Language: C

#include<stdio.h>

int main(void)

{

    double r,double pai = 3.14159265359;

    scanf("%lf",&r);

    printf("%lf %lf\n",r*r*pai,2*r*pai);

    return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:14: error: expected identifier or '(' before 'double'
    7 |     double r,double pai = 3.14159265359;
      |              ^~~~~~
main.c:11:28: error: 'pai' undeclared (first use in this function)
   11 |     printf("%lf %lf\n",r*r*pai,2*r*pai);
      |                            ^~~
main.c:11:28: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(void)

{

double r,m,n;

scanf("%d"&r);

m=3.14*r*r;

n=2*3.14*r;

printf("%5lf %5lf",m,n);

return 0;

}

Compiler output:
main.c: In function 'main':
main.c:9:11: error: invalid operands to binary & (have 'char *' and 'double')
    9 | scanf("%d"&r);
      |       ~~~~^
      |       |
      |       char *
Language: C

#include<stdio.h>

int main(void)

{

    double r,double pai = 3.14159265359;

    scanf("%lf",&r);

    printf("%f %f\n",r*r*pai,2*r*pai);

    return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:14: error: expected identifier or '(' before 'double'
    7 |     double r,double pai = 3.14159265359;
      |              ^~~~~~
main.c:11:26: error: 'pai' undeclared (first use in this function)
   11 |     printf("%f %f\n",r*r*pai,2*r*pai);
      |                          ^~~
main.c:11:26: note: each undeclared identifier is reported only once for each function it appears in