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

#include<stdio.h>

int main(){
    for(int i; i<10; i++) {
        for(int j; j<10; j++) {
            printf(%d+%d=%d", i, j, i*j);
        }
    }

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:20: error: expected expression before '%' token
    6 |             printf(%d+%d=%d", i, j, i*j);
      |                    ^
main.c:6:28: warning: missing terminating " character
    6 |             printf(%d+%d=%d", i, j, i*j);
      |                            ^
main.c:6:28: error: missing terminating " character
    6 |             printf(%d+%d=%d", i, j, i*j);
      |                            ^~~~~~~~~~~~~~
main.c:6:28: error: expected ';' before '}' token
    6 |             printf(%d+%d=%d", i, j, i*j);
      |                            ^
      |                            ;
    7 |         }
      |         ~
Language: C

#include<stdio.h>

int main(){
    for(int i=0; i<10; i++) {
        for(int j=0; j<10; j++) {
            printf(%d+%d=%d", i, j, i*j);
        }
    }

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:20: error: expected expression before '%' token
    6 |             printf(%d+%d=%d", i, j, i*j);
      |                    ^
main.c:6:28: warning: missing terminating " character
    6 |             printf(%d+%d=%d", i, j, i*j);
      |                            ^
main.c:6:28: error: missing terminating " character
    6 |             printf(%d+%d=%d", i, j, i*j);
      |                            ^~~~~~~~~~~~~~
main.c:6:28: error: expected ';' before '}' token
    6 |             printf(%d+%d=%d", i, j, i*j);
      |                            ^
      |                            ;
    7 |         }
      |         ~
Language: C

#include<stdio.h>

int main(void){
	
	int x,y;
	
	for(x=1;x<=9;x++){
		for(y=1;y<=9;Y++){
			printf("%dx%d=%d\n", x,y,x*y);
		}
	}
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:30: error: 'Y' undeclared (first use in this function)
    8 |                 for(y=1;y<=9;Y++){
      |                              ^
main.c:8:30: note: each undeclared identifier is reported only once for each function it appears in
Language: C

	int i,j;
 
	for(i = 1; i <= 9; i++){
		for(j = 1; j <= 9; j++)
		printf("%d*%d=%d\n", i,j, i*j);
        }

Compiler output:
main.c:3:9: error: expected identifier or '(' before 'for'
    3 |         for(i = 1; i <= 9; i++){
      |         ^~~
main.c:3:22: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<=' token
    3 |         for(i = 1; i <= 9; i++){
      |                      ^~
main.c:3:29: error: expected '=', ',', ';', 'asm' or '__attribute__' before '++' token
    3 |         for(i = 1; i <= 9; i++){
      |                             ^~
Language: C

#include <stdio.h>
 
int main() {
	int a,b;
 
	for(a = 1; a <= 9; a++){
		for(b = 1; b <= 9; b++)
		printf("%d*%d=%d\n", i, j, i*j);
        }
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:38: error: 'i' undeclared (first use in this function)
    8 |                 printf("%d*%d=%d\n", i, j, i*j);
      |                                      ^
main.c:8:38: note: each undeclared identifier is reported only once for each function it appears in
main.c:8:41: error: 'j' undeclared (first use in this function)
    8 |                 printf("%d*%d=%d\n", i, j, i*j);
      |                                         ^
Language: C

#include<stdio.h>

int main(){

for(i=1;i<10;i++){
    for(j=1;j<10;j++){

        printf(%dx%d=%d,i,j,i*j);
    }
}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:5: error: 'i' undeclared (first use in this function)
    5 | for(i=1;i<10;i++){
      |     ^
main.c:5:5: note: each undeclared identifier is reported only once for each function it appears in
main.c:6:9: error: 'j' undeclared (first use in this function)
    6 |     for(j=1;j<10;j++){
      |         ^
main.c:8:16: error: expected expression before '%' token
    8 |         printf(%dx%d=%d,i,j,i*j);
      |                ^
Language: C

#include<stdio.h>

int main(){

int i,j;

for(i=1;i<10;i++){
    for(j=1;j<10;j++){

        printf(%dx%d=%d,i,j,i*j);
    }
}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:16: error: expected expression before '%' token
   10 |         printf(%dx%d=%d,i,j,i*j);
      |                ^
Language: C

#include<stdio.h>

int main(){

int i,j,n;

for(i=1;i<10;i++){
    for(j=1;j<10;j++){
        n=i*j;
        printf(%dx%d=%d,i,j,n);
    }
}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:16: error: expected expression before '%' token
   10 |         printf(%dx%d=%d,i,j,n);
      |                ^
Language: C

#inckude<stdio.h>

int i,j;

main(){

for(i=0;i<=9;i++){
for(j=0;j<=9;j++){

printf(i*j);

}}}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #inckude; did you mean #include?
    1 | #inckude<stdio.h>
      |  ^~~~~~~
      |  include
main.c:5:1: error: return type defaults to 'int' [-Wimplicit-int]
    5 | main(){
      | ^~~~
main.c: In function 'main':
main.c:10:1: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   10 | printf(i*j);
      | ^~~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'printf'
  +++ |+#include <stdio.h>
    1 | #inckude<stdio.h>
main.c:10:1: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   10 | printf(i*j);
      | ^~~~~~
main.c:10:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:10:9: error: passing argument 1 of 'printf' makes pointer from integer without a cast [-Wint-conversion]
   10 | printf(i*j);
      |        ~^~
      |         |
      |         int
main.c:10:9: note: expected 'const char *' but argument is of type 'int'
Language: C

#include<stdio.h>
int main(void){
int i,j;
for(i=1;i<10;1++){
for(j=1;j<10;j++){
printf("%d\n",i*j;
}
}
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:15: error: lvalue required as increment operand
    4 | for(i=1;i<10;1++){
      |               ^~
main.c:6:18: error: expected ')' before ';' token
    6 | printf("%d\n",i*j;
      |       ~          ^
      |                  )
main.c:6:19: error: expected ';' before '}' token
    6 | printf("%d\n",i*j;
      |                   ^
      |                   ;
    7 | }
      | ~
Language: C

#include<stdio.h>
int main(void){
int i,j;
for(i=1;i<10;1++){
for(j=1;j<10;j++){
printf("%dx%d=%d\n",i,j,i*j);
}
}
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:15: error: lvalue required as increment operand
    4 | for(i=1;i<10;1++){
      |               ^~
Language: C

#include<stdio.h>

int main(){

int i,j;

for(i=1;i<=9,i++)
{
	for(j=1;j<=9;j++)
	{
		printf("%d??%d=%d\n",i,j,i*j);
	}
}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:17: error: expected ';' before ')' token
    7 | for(i=1;i<=9,i++)
      |                 ^
      |                 ;
Language: C

#include<stdio.h>

int main(){

int i,j;

for(i=1;i<=9,i++)
{
	for(j=1;j<=9;j++);
	{
		printf("%d??%d=%d\n",i,j,i*j);
	}
}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:17: error: expected ';' before ')' token
    7 | for(i=1;i<=9,i++)
      |                 ^
      |                 ;
Language: C

#include<stdio.h>

int main(){

int i,j;

for(i=1;i<=9,i++);
{
	for(j=1;j<=9;j++);
	{
		printf("%d??%d=%d\n",i,j,i*j);
	}
}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:17: error: expected ';' before ')' token
    7 | for(i=1;i<=9,i++);
      |                 ^
      |                 ;
Language: C

#include<stdio.h>

int main(){

int i,j;

for(i=1;i<=9,i++)
	for(j=1;j<=9;j++)
		printf("%d??%d=%d\n",i,j,i*j);

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:17: error: expected ';' before ')' token
    7 | for(i=1;i<=9,i++)
      |                 ^
      |                 ;
Language: C

#include<stdio.h>

int main(){

int i,j;

for(i=1;i<=9;i++){
    for(j=1;i<=9;j++){
printf("%dx%d=%d"i,j,i*j);
}
}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:9:18: error: expected ')' before 'i'
    9 | printf("%dx%d=%d"i,j,i*j);
      |       ~          ^
      |                  )
Language: C

#include<stdio.h>

int main(){
	for(int i=1; i<=9; i++){
		for(j=1; j<=9;j++){
			printf("%dx%d=%d\n",i,j,i*j);
		}
	}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:21: error: 'j' undeclared (first use in this function)
    5 |                 for(j=1; j<=9;j++){
      |                     ^
main.c:5:21: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(){
	for(int i=1;i<=9;i++){
		for(j=1;j<=9;j++){
			printf("%dx%d=%d\n",i,j,i*j);
		}
	}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:21: error: 'j' undeclared (first use in this function)
    5 |                 for(j=1;j<=9;j++){
      |                     ^
main.c:5:21: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
#define max 9
#define min 1
int main(){

int i,j;

for(i=min;i<=max:i++){
for(j=min:j<=max;j++){
printf("%dx%d=%d\n",i,j,i*j);
}
}

return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:17: error: expected ';' before ':' token
    8 | for(i=min;i<=max:i++){
      |                 ^
main.c:9:10: error: expected ';' before ':' token
    9 | for(j=min:j<=max;j++){
      |          ^
main.c:9:21: error: expected ';' before ')' token
    9 | for(j=min:j<=max;j++){
      |                     ^
      |                     ;
Language: C

#include <stdio.h>
#define max 9
#define min 1
int main(){

int i,j;

for(i=min;i<=max:i++){
for(j=min;j<=max;j++){
printf("%dx%d=%d\n",i,j,i*j);
}
}

return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:17: error: expected ';' before ':' token
    8 | for(i=min;i<=max:i++){
      |                 ^
Language: C

#include <stdio.h>

int main(void)
{
	int i,j;

	for(i=1;i<=9;i++)
	{
		for(j=1;j<=9;j++)
		{
			printf("%d ",ixj);
		}

		printf("\n");
	}

 	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:38: error: 'ixj' undeclared (first use in this function)
   11 |                         printf("%d ",ixj);
      |                                      ^~~
main.c:11:38: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
int main(void){
    int s,k;
    for(s=1;s<=9;s++);
???  {
       for(k=1;k<=9;k++);
       {
           printf("%dx%d=%d\n",s,k,s*k);
       }
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:1: error: expected expression before '?' token
    5 | ???  {
      | ^
Language: C

#include<stdio.h>
int main(void){
	int a,b,s;
	for(a=1;i<=9;a++){
		1*a=s;
		printf("1*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		2*a=s;
		printf("2*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		3*a=s;
		printf("3*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		4*a=s;
		printf("4*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		5*a=s;
		printf("5*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		6*a=s;
		printf("6*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		7*a=s;
		printf("7*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		8*a=s;
		printf("8*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		9*a=s;
		printf("9*%d=%d\n",a,s);
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:17: error: 'i' undeclared (first use in this function)
    4 |         for(a=1;i<=9;a++){
      |                 ^
main.c:4:17: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:20: error: lvalue required as left operand of assignment
    5 |                 1*a=s;
      |                    ^
main.c:9:20: error: lvalue required as left operand of assignment
    9 |                 2*a=s;
      |                    ^
main.c:13:20: error: lvalue required as left operand of assignment
   13 |                 3*a=s;
      |                    ^
main.c:17:20: error: lvalue required as left operand of assignment
   17 |                 4*a=s;
      |                    ^
main.c:21:20: error: lvalue required as left operand of assignment
   21 |                 5*a=s;
      |                    ^
main.c:25:20: error: lvalue required as left operand of assignment
   25 |                 6*a=s;
      |                    ^
main.c:29:20: error: lvalue required as left operand of assignment
   29 |                 7*a=s;
      |                    ^
main.c:33:20: error: lvalue required as left operand of assignment
   33 |                 8*a=s;
      |                    ^
main.c:37:20: error: lvalue required as left operand of assignment
   37 |                 9*a=s;
      |                    ^
Language: C

#include<stdio.h>
int main(void){
	int a,s;
	for(a=1;i<=9;a++){
		1*a=s;
		printf("1*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		2*a=s;
		printf("2*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		3*a=s;
		printf("3*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		4*a=s;
		printf("4*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		5*a=s;
		printf("5*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		6*a=s;
		printf("6*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		7*a=s;
		printf("7*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		8*a=s;
		printf("8*%d=%d\n",a,s);
	}
	for(a=1;i<=9;a++){
		9*a=s;
		printf("9*%d=%d\n",a,s);
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:17: error: 'i' undeclared (first use in this function)
    4 |         for(a=1;i<=9;a++){
      |                 ^
main.c:4:17: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:20: error: lvalue required as left operand of assignment
    5 |                 1*a=s;
      |                    ^
main.c:9:20: error: lvalue required as left operand of assignment
    9 |                 2*a=s;
      |                    ^
main.c:13:20: error: lvalue required as left operand of assignment
   13 |                 3*a=s;
      |                    ^
main.c:17:20: error: lvalue required as left operand of assignment
   17 |                 4*a=s;
      |                    ^
main.c:21:20: error: lvalue required as left operand of assignment
   21 |                 5*a=s;
      |                    ^
main.c:25:20: error: lvalue required as left operand of assignment
   25 |                 6*a=s;
      |                    ^
main.c:29:20: error: lvalue required as left operand of assignment
   29 |                 7*a=s;
      |                    ^
main.c:33:20: error: lvalue required as left operand of assignment
   33 |                 8*a=s;
      |                    ^
main.c:37:20: error: lvalue required as left operand of assignment
   37 |                 9*a=s;
      |                    ^
Language: C

#include <stdio.h>

int main(){
    int i,j;
    for(i=1;si<=9;i++);{
       for(j=1;j<=9;j++);{
           printf("%dx%d=%d\n",i,j,i*j);
       }
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:13: error: 'si' undeclared (first use in this function); did you mean 'i'?
    5 |     for(i=1;si<=9;i++);{
      |             ^~
      |             i
main.c:5:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
int main(void){
	int a,s;
	for(a=1;ia<=9;a++){
		1*a=s;
		printf("1*%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		2*a=s;
		printf("2*%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		3*a=s;
		printf("3*%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		4*a=s;
		printf("4*%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		5*a=s;
		printf("5*%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		6*a=s;
		printf("6*%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		7*a=s;
		printf("7*%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		8*a=s;
		printf("8*%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		9*a=s;
		printf("9*%d=%d\n",a,s);
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:17: error: 'ia' undeclared (first use in this function); did you mean 'a'?
    4 |         for(a=1;ia<=9;a++){
      |                 ^~
      |                 a
main.c:4:17: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:20: error: lvalue required as left operand of assignment
    5 |                 1*a=s;
      |                    ^
main.c:9:20: error: lvalue required as left operand of assignment
    9 |                 2*a=s;
      |                    ^
main.c:13:20: error: lvalue required as left operand of assignment
   13 |                 3*a=s;
      |                    ^
main.c:17:20: error: lvalue required as left operand of assignment
   17 |                 4*a=s;
      |                    ^
main.c:21:20: error: lvalue required as left operand of assignment
   21 |                 5*a=s;
      |                    ^
main.c:25:20: error: lvalue required as left operand of assignment
   25 |                 6*a=s;
      |                    ^
main.c:29:20: error: lvalue required as left operand of assignment
   29 |                 7*a=s;
      |                    ^
main.c:33:20: error: lvalue required as left operand of assignment
   33 |                 8*a=s;
      |                    ^
main.c:37:20: error: lvalue required as left operand of assignment
   37 |                 9*a=s;
      |                    ^
Language: C

#include <stdio.h>
int main(void)
{
    int a, b;
for(a=1, <=9, a++){
for(b=1, <=9, b++){
}
}
printf(%dx%d=%d\n a, b; a*b)
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:10: error: expected expression before '<=' token
    5 | for(a=1, <=9, a++){
      |          ^~
main.c:5:18: error: expected expression before ')' token
    5 | for(a=1, <=9, a++){
      |                  ^
main.c:6:10: error: expected expression before '<=' token
    6 | for(b=1, <=9, b++){
      |          ^~
main.c:6:18: error: expected expression before ')' token
    6 | for(b=1, <=9, b++){
      |                  ^
main.c:9:8: error: expected expression before '%' token
    9 | printf(%dx%d=%d\n a, b; a*b)
      |        ^
main.c:9:16: error: stray '\' in program
    9 | printf(%dx%d=%d\n a, b; a*b)
      |                ^
main.c:9:29: error: expected ';' before 'return'
    9 | printf(%dx%d=%d\n a, b; a*b)
      |                             ^
      |                             ;
   10 | return 0;
      | ~~~~~~
Language: C

#include <stdio.h>
int main(void)
{
    int a, b;
for(a=1, <=9, a++){
for(b=1, <=9, b++){
}
}
printf("%dx%d=%d\n" a, b; a*b)
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:10: error: expected expression before '<=' token
    5 | for(a=1, <=9, a++){
      |          ^~
main.c:5:18: error: expected expression before ')' token
    5 | for(a=1, <=9, a++){
      |                  ^
main.c:6:10: error: expected expression before '<=' token
    6 | for(b=1, <=9, b++){
      |          ^~
main.c:6:18: error: expected expression before ')' token
    6 | for(b=1, <=9, b++){
      |                  ^
main.c:9:20: error: expected ')' before 'a'
    9 | printf("%dx%d=%d\n" a, b; a*b)
      |       ~            ^~
      |                    )
main.c:9:31: error: expected ';' before 'return'
    9 | printf("%dx%d=%d\n" a, b; a*b)
      |                               ^
      |                               ;
   10 | return 0;
      | ~~~~~~
Language: C

#include <stdio.h>
int main(void)
{
    int a, b;
for(a=1, <=9; a++){
for(b=1, <=9; b++){
printf("%dx%d=%d\n" a, b, a*b);
}
}
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:10: error: expected expression before '<=' token
    5 | for(a=1, <=9; a++){
      |          ^~
main.c:5:18: error: expected ';' before ')' token
    5 | for(a=1, <=9; a++){
      |                  ^
      |                  ;
main.c:6:10: error: expected expression before '<=' token
    6 | for(b=1, <=9; b++){
      |          ^~
main.c:6:18: error: expected ';' before ')' token
    6 | for(b=1, <=9; b++){
      |                  ^
      |                  ;
main.c:7:20: error: expected ')' before 'a'
    7 | printf("%dx%d=%d\n" a, b, a*b);
      |       ~            ^~
      |                    )
Language: C

#include<stdio.h>
int main(void){
	int a,s;
	for(a=1;ia<=9;a++){
		1*a=s;
		printf("1x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		2*a=s;
		printf("2x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		3*a=s;
		printf("3x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		4*a=s;
		printf("4x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		5*a=s;
		printf("5x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		6*a=s;
		printf("6x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		7*a=s;
		printf("7x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		8*a=s;
		printf("8x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		9*a=s;
		printf("9x%d=%d\n",a,s);
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:17: error: 'ia' undeclared (first use in this function); did you mean 'a'?
    4 |         for(a=1;ia<=9;a++){
      |                 ^~
      |                 a
main.c:4:17: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:20: error: lvalue required as left operand of assignment
    5 |                 1*a=s;
      |                    ^
main.c:9:20: error: lvalue required as left operand of assignment
    9 |                 2*a=s;
      |                    ^
main.c:13:20: error: lvalue required as left operand of assignment
   13 |                 3*a=s;
      |                    ^
main.c:17:20: error: lvalue required as left operand of assignment
   17 |                 4*a=s;
      |                    ^
main.c:21:20: error: lvalue required as left operand of assignment
   21 |                 5*a=s;
      |                    ^
main.c:25:20: error: lvalue required as left operand of assignment
   25 |                 6*a=s;
      |                    ^
main.c:29:20: error: lvalue required as left operand of assignment
   29 |                 7*a=s;
      |                    ^
main.c:33:20: error: lvalue required as left operand of assignment
   33 |                 8*a=s;
      |                    ^
main.c:37:20: error: lvalue required as left operand of assignment
   37 |                 9*a=s;
      |                    ^
Language: C

#include<stdio.h>
int main(void){
	int a,s;
	for(a=1;ia<=9;a++){
		s=1*a;
		printf("1x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		a=2*a;
		printf("2x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=3*a;
		printf("3x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=4*a;
		printf("4x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=5*a;
		printf("5x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=6*a;
		printf("6x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=7*a;
		printf("7x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=8*a;
		printf("8x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=9*a;
		printf("9x%d=%d\n",a,s);
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:17: error: 'ia' undeclared (first use in this function); did you mean 'a'?
    4 |         for(a=1;ia<=9;a++){
      |                 ^~
      |                 a
main.c:4:17: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
int main(void){
	int a,s;
	for(a=1;ia<=9;a++){
		s=1*a;
		printf("1x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=2*a;
		printf("2x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=3*a;
		printf("3x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=4*a;
		printf("4x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=5*a;
		printf("5x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=6*a;
		printf("6x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=7*a;
		printf("7x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=8*a;
		printf("8x%d=%d\n",a,s);
	}
	for(a=1;a<=9;a++){
		s=9*a;
		printf("9x%d=%d\n",a,s);
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:17: error: 'ia' undeclared (first use in this function); did you mean 'a'?
    4 |         for(a=1;ia<=9;a++){
      |                 ^~
      |                 a
main.c:4:17: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
int main(void)
{
    int a, b;
for(a=1; a<=9; a++){
for(b=1; b<=9; b++){
printf("%dx%d=%d\n" ,a, b, a*b);
}
}
return 0;

Compiler output:
main.c: In function 'main':
main.c:10:1: error: expected declaration or statement at end of input
   10 | return 0;
      | ^~~~~~
Language: C

#include <stdio.h>
int main(void)
{
    int a, b;
for(a=1; a<=9; a++){
for(b=1; b<=9; b++){
printf("%dx%d=%d\n" ,a, b, a*b);
}
}
return 0;
???

Compiler output:
main.c: In function 'main':
main.c:11:1: error: expected expression before '?' token
   11 | ???
      | ^
main.c:11:3: error: expected declaration or statement at end of input
   11 | ???
      |   ^
Language: C

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

   int a,b,c;
   for(a=1:a<10;a++){
   for(b=1;b<10;b++){
   c=a*b;
   printf("%dx%d=%d\n",a,b,c);
   }
   return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:11: error: expected ';' before ':' token
    5 |    for(a=1:a<10;a++){
      |           ^
      |           ;
main.c:5:20: error: expected ';' before ')' token
    5 |    for(a=1:a<10;a++){
      |                    ^
      |                    ;
main.c:11:1: error: expected declaration or statement at end of input
   11 | }
      | ^
Language: C

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

   int a,b,c;
   for(a=1:a<10;a++){
   for(b=1;b<10;b++){
   c=a*b;
   printf("%dx%d=%d\n",a,b,c);
   }
   }
   return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:11: error: expected ';' before ':' token
    5 |    for(a=1:a<10;a++){
      |           ^
      |           ;
main.c:5:20: error: expected ';' before ')' token
    5 |    for(a=1:a<10;a++){
      |                    ^
      |                    ;
Language: C

#include<stdio.h>
int main(void){
   int a,b,c;
   for(a=1:a<10;a++){
   for(b=1;b<10;b++){
   c=a*b;
   printf("%dx%d=%d\n",a,b,c);
   }
   }
   return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:11: error: expected ';' before ':' token
    4 |    for(a=1:a<10;a++){
      |           ^
      |           ;
main.c:4:20: error: expected ';' before ')' token
    4 |    for(a=1:a<10;a++){
      |                    ^
      |                    ;
Language: C

#include <stdio.h>
int main(void){
    int a, b, c;
    a = 1;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
#include <stdio.h>
int main(void){
    int a, b, c;
    a = 2;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
#include <stdio.h>
int main(void){
    int a, b, c;
    a = 3;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
#include <stdio.h>
int main(void){
    int a, b, c;
    a = 4;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
#include <stdio.h>
int main(void){
    int a, b, c;
    a = 5;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
#include <stdio.h>
int main(void){
    int a, b, c;
    a = 6;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
#include <stdio.h>
int main(void){
    int a, b, c;
    a = 7;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
#include <stdio.h>
int main(void){
    int a, b, c;
    a = 8;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
#include <stdio.h>
int main(void){
    int a, b, c;
    a = 9;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }

Compiler output:
main.c: In function 'main':
main.c:72:5: error: expected declaration or statement at end of input
   72 |     }
      |     ^
main.c: In function 'main':
main.c:72:5: error: expected declaration or statement at end of input
main.c: In function 'main':
main.c:72:5: error: expected declaration or statement at end of input
main.c: In function 'main':
main.c:72:5: error: expected declaration or statement at end of input
main.c: In function 'main':
main.c:72:5: error: expected declaration or statement at end of input
main.c: In function 'main':
main.c:72:5: error: expected declaration or statement at end of input
main.c: In function 'main':
main.c:72:5: error: expected declaration or statement at end of input
main.c: In function 'main':
main.c:72:5: error: expected declaration or statement at end of input
main.c: In function 'main':
main.c:72:5: error: expected declaration or statement at end of input
Language: C

#include<stdio.h>
int main(void){
	int a,b,c;
	for(a=1;a>10;a++){
	 for(b=1;b>10;a++){
	 c=a*b;
	printf("%dx%d=%d\n",a,b,c);
    {
 }
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:1: error: expected declaration or statement at end of input
   11 | }
      | ^
main.c:11:1: error: expected declaration or statement at end of input
Language: C

#include <stdio.h>
int main(void){
    int a, b, c;
    a = 1;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
    a = 2;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
    a = 3;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
    a = 4;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
    a = 5;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
    a = 6;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
    a = 7;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
    a = 8;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }
    a = 9;
    for(b=1;b<10;b++){
       c = a * b;
       printf("%dx%d=%d\n", a, b, c);
    }

Compiler output:
main.c: In function 'main':
main.c:48:5: error: expected declaration or statement at end of input
   48 |     }
      |     ^
Language: C

#include<stdio.h>
int main(void){
    int a, b, c;
    for(a=1;a<10;a++){
      for(b=1;b<10;a++);
	c = a * b;
        printf("%d*%d=%d\n", a, b, c);
      }
    }
    return 0;
}

Compiler output:
main.c:10:5: error: expected identifier or '(' before 'return'
   10 |     return 0;
      |     ^~~~~~
main.c:11:1: error: expected identifier or '(' before '}' token
   11 | }
      | ^
Language: C

#include<stdio.h>
int main(void){
    int a, b, c;
    for(a=1;a<10;a++){
      for(b=1;b<10;b++);
	c = a * b;
        printf("%d*%d=%d\n", a, b, c);
      }
    }
    return 0;
}

Compiler output:
main.c:10:5: error: expected identifier or '(' before 'return'
   10 |     return 0;
      |     ^~~~~~
main.c:11:1: error: expected identifier or '(' before '}' token
   11 | }
      | ^
Language: C

#include<stdio.h>
int main(void){
    int a, b, c;
    for(a=1;a<10;a++){
      for(b=1;b<10;b++);
      c = a * b;
        printf("%d*%d=%d\n", a, b, c);
      }
    }
    return 0;
}

Compiler output:
main.c:10:5: error: expected identifier or '(' before 'return'
   10 |     return 0;
      |     ^~~~~~
main.c:11:1: error: expected identifier or '(' before '}' token
   11 | }
      | ^
Language: C

#include<stdio.h>
int main(void){
    int a, b, c;
    for(a=1;a<10;a++){
      for(b=1;b<10;b++);
      c = a * b;
        printf("%d * %d = %d\n", a, b, c);
      }
    }
    return 0;
}

Compiler output:
main.c:10:5: error: expected identifier or '(' before 'return'
   10 |     return 0;
      |     ^~~~~~
main.c:11:1: error: expected identifier or '(' before '}' token
   11 | }
      | ^
Language: C

#include<stdio.h>
int main(void){
    int a, b, c;
    for(a=1;a<10;a++){
      for(b=1;b<10;a++);
      c = a * b;
        printf("%d * %d = %d\n", a, b, c);
      }
    }
    return 0;
}

Compiler output:
main.c:10:5: error: expected identifier or '(' before 'return'
   10 |     return 0;
      |     ^~~~~~
main.c:11:1: error: expected identifier or '(' before '}' token
   11 | }
      | ^
Language: C

#include<stdio.h>
int main()
{
int a,b;
for(a=1,a<9,a++);
for(b=1,b<9,b++);
printf("%dx%d=%d?\n, a*b);

return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:16: error: expected ';' before ')' token
    5 | for(a=1,a<9,a++);
      |                ^
      |                ;
main.c:5:16: error: expected expression before ')' token
main.c:6:16: error: expected ';' before ')' token
    6 | for(b=1,b<9,b++);
      |                ^
      |                ;
main.c:6:16: error: expected expression before ')' token
main.c:7:8: warning: missing terminating " character
    7 | printf("%dx%d=%d?\n, a*b);
      |        ^
main.c:7:8: error: missing terminating " character
    7 | printf("%dx%d=%d?\n, a*b);
      |        ^~~~~~~~~~~~~~~~~~~
main.c:9:1: error: expected expression before 'return'
    9 | return 0;
      | ^~~~~~
main.c:9:10: error: expected ';' before '}' token
    9 | return 0;
      |          ^
      |          ;
   10 | }
      | ~
Language: C

#include<stdio.h>
int main(){
    for (i=1; i<=9; i++) {
	for (j=1; j<=; j++) {
	    printf("%dx%d=%d%n", i, j, i*j);
	}
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:3:10: error: 'i' undeclared (first use in this function)
    3 |     for (i=1; i<=9; i++) {
      |          ^
main.c:3:10: note: each undeclared identifier is reported only once for each function it appears in
main.c:4:14: error: 'j' undeclared (first use in this function)
    4 |         for (j=1; j<=; j++) {
      |              ^
main.c:4:22: error: expected expression before ';' token
    4 |         for (j=1; j<=; j++) {
      |                      ^
Language: C

#include<stdio.h>
int main(){
    for (int i=1; i<=9; i++) {
	for (int j=1; j<=; j++) {
	    printf("%dx%d=%d\n", i, j, i*j);
	}
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:26: error: expected expression before ';' token
    4 |         for (int j=1; j<=; j++) {
      |                          ^
Language: C

#include <stdio.h>

int main (void){

    int i,j;
    
    for(i=1,i<=9,i++){
        
        for(j=1,j<=9,j++)
        
        printf("%d*%d=%d",i,j,i*j);
    
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:21: error: expected ';' before ')' token
    7 |     for(i=1,i<=9,i++){
      |                     ^
      |                     ;
main.c:7:21: error: expected expression before ')' token
main.c:9:25: error: expected ';' before ')' token
    9 |         for(j=1,j<=9,j++)
      |                         ^
      |                         ;
main.c:9:25: error: expected expression before ')' token
Language: C

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

  int i , j ;

  for (i = 1 ; i <= 9 ; i++){
    for (j = 1 ; j <= 9 ; j++){
      pritnf ("%dx%d=%d\n",i,j,i*j);
    }

  }

  return 0 ;
}

Compiler output:
main.c: In function 'main':
main.c:8:7: error: implicit declaration of function 'pritnf'; did you mean 'printf'? [-Wimplicit-function-declaration]
    8 |       pritnf ("%dx%d=%d\n",i,j,i*j);
      |       ^~~~~~
      |       printf
Language: C

#include<stdio.h>

int main(){

for(i=1;i<=9;i++){
   for(j=1;j<=9;j++){ 
printf("%d*%d=%d\n",i,j,i*j)
}
}
}

Compiler output:
main.c: In function 'main':
main.c:5:5: error: 'i' undeclared (first use in this function)
    5 | for(i=1;i<=9;i++){
      |     ^
main.c:5:5: note: each undeclared identifier is reported only once for each function it appears in
main.c:6:8: error: 'j' undeclared (first use in this function)
    6 |    for(j=1;j<=9;j++){
      |        ^
main.c:7:29: error: expected ';' before '}' token
    7 | printf("%d*%d=%d\n",i,j,i*j)
      |                             ^
      |                             ;
    8 | }
      | ~
Language: C

#include<stdio.h>

int main(){

for(i=1;i<=9;i++){
   for(j=1;j<=9;j++){ 
printf("%d*%d=%d\n",i,j,i*j);
}
}
}

Compiler output:
main.c: In function 'main':
main.c:5:5: error: 'i' undeclared (first use in this function)
    5 | for(i=1;i<=9;i++){
      |     ^
main.c:5:5: note: each undeclared identifier is reported only once for each function it appears in
main.c:6:8: error: 'j' undeclared (first use in this function)
    6 |    for(j=1;j<=9;j++){
      |        ^
Language: C

#include<stdio.h>

int main(void){
int i,j;
for(i=1;i<10;i++){
 for(j=1;j<10;j++){
  printf("%d * %d = %d\\",i,j,i*j);
}
}

return 0:
}

Compiler output:
main.c: In function 'main':
main.c:11:9: error: expected ';' before ':' token
   11 | return 0:
      |         ^
      |         ;
Language: C

#include<stdio.h>

int main(){
for(i=1;i<10;i++){
for(j=1;j<10;j++){
printf("%dx%d=%d\n",i,j,i*j);
}
}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:5: error: 'i' undeclared (first use in this function)
    4 | for(i=1;i<10;i++){
      |     ^
main.c:4:5: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:5: error: 'j' undeclared (first use in this function)
    5 | for(j=1;j<10;j++){
      |     ^
Language: C

#include<stdio.h>

int main(){
  int i, j;

  for(i=0;i<=9;i++)
  {
    for(j=0;j<=9;j++)
    {
      print("%d x %d = %d", i, j, i * j);
    }
  }

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:7: error: implicit declaration of function 'print'; did you mean 'printf'? [-Wimplicit-function-declaration]
   10 |       print("%d x %d = %d", i, j, i * j);
      |       ^~~~~
      |       printf
Language: C

#include<stdio.h>

int main(){
  int i, j;

  for(i=0;i<=9;i++)
  {
    for(j=0;j<=9;j++)
    {
      print("%dx%d=%d", i, j, i * j);
    }
  }

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:7: error: implicit declaration of function 'print'; did you mean 'printf'? [-Wimplicit-function-declaration]
   10 |       print("%dx%d=%d", i, j, i * j);
      |       ^~~~~
      |       printf
Language: C

#include<stdio.h>

int main(){
    for( i=1; i<=9; i++) {
        for( j=1; j<=9; j++) {
           printf("%dx%d=%d", i, j, i*j);
        }
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:10: error: 'i' undeclared (first use in this function)
    4 |     for( i=1; i<=9; i++) {
      |          ^
main.c:4:10: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:14: error: 'j' undeclared (first use in this function)
    5 |         for( j=1; j<=9; j++) {
      |              ^
Language: C

#include<stdio.h>

int main(){
    int i;
    for( i=1; i<=9; i++) {
        for( j=1; j<=9; j++) {
           printf("%dx%d=%d", i, j, i*j);
        }
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:14: error: 'j' undeclared (first use in this function)
    6 |         for( j=1; j<=9; j++) {
      |              ^
main.c:6:14: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(){
??????for(int i=0;i<10;i++){
       for (int j=0;j<10;j++){
          printf("%dx%d=%d",i,j,i*j);
       }
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:1: error: expected expression before '?' token
    4 | ??????for(int i=0;i<10;i++){
      | ^
Language: C

 #inlude <stdio.h>

int main()
{
  int i,j

  for ( i=1 ; i<=9 ; i++ )
  { for ( j=1 ; j<=9 ; j++ )
    { printf ("i*j=%d",i*j);
   }
  return 0 
}
    

Compiler output:
main.c:1:3: error: invalid preprocessing directive #inlude; did you mean #include?
    1 |  #inlude <stdio.h>
      |   ^~~~~~
      |   include
main.c: In function 'main':
main.c:7:3: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'for'
    7 |   for ( i=1 ; i<=9 ; i++ )
      |   ^~~
main.c:7:25: error: expected ';' before ')' token
    7 |   for ( i=1 ; i<=9 ; i++ )
      |                         ^~
      |                         ;
main.c:7:26: error: expected statement before ')' token
    7 |   for ( i=1 ; i<=9 ; i++ )
      |                          ^
main.c:8:11: error: 'j' undeclared (first use in this function)
    8 |   { for ( j=1 ; j<=9 ; j++ )
      |           ^
main.c:8:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:7: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    9 |     { printf ("i*j=%d",i*j);
      |       ^~~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'printf'
  +++ |+#include <stdio.h>
    1 |  #inlude <stdio.h>
main.c:9:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    9 |     { printf ("i*j=%d",i*j);
      |       ^~~~~~
main.c:9:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:11:11: error: expected ';' before '}' token
   11 |   return 0
      |           ^
      |           ;
   12 | }
      | ~          
main.c:12:1: error: expected declaration or statement at end of input
   12 | }
      | ^
Language: C

void main(void)
{
 for(int y=1;y<10;y++)
  for(int x=1;x<10;x++)
   printf(x*y);

 return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:4: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    5 |    printf(x*y);
      |    ^~~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'printf'
  +++ |+#include <stdio.h>
    1 | void main(void)
main.c:5:4: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    5 |    printf(x*y);
      |    ^~~~~~
main.c:5:4: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:5:12: error: passing argument 1 of 'printf' makes pointer from integer without a cast [-Wint-conversion]
    5 |    printf(x*y);
      |           ~^~
      |            |
      |            int
main.c:5:12: note: expected 'const char *' but argument is of type 'int'
main.c:7:9: error: 'return' with a value, in function returning void [-Wreturn-mismatch]
    7 |  return 0;
      |         ^
main.c:1:6: note: declared here
    1 | void main(void)
      |      ^~~~
Language: C

#include<stdio.h>

int main(void)
{
	int i,j;
	for(i=1,i<=9,i++)
	{
		for(j=1,j<=9,j++)
		{
			printf("%dx%d=%d",i,j,i*j)
		}
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:25: error: expected ';' before ')' token
    6 |         for(i=1,i<=9,i++)
      |                         ^
      |                         ;
main.c:6:25: error: expected expression before ')' token
main.c:8:33: error: expected ';' before ')' token
    8 |                 for(j=1,j<=9,j++)
      |                                 ^
      |                                 ;
main.c:8:33: error: expected expression before ')' token
main.c:10:51: error: expected ';' before '}' token
   10 |                         printf("%dx%d=%d",i,j,i*j)
      |                                                   ^
      |                                                   ;
   11 |                 }
      |                 ~
Language: C

#include<stdio.h>

int main(){
    int x,y,z;
    for (x=1,x<=9,x++){
        for (y=1,y<=9,y++){
            z=x*y
            printf("%dx%d=%d\n",x,y,z);
        }    
    }
    
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:22: error: expected ';' before ')' token
    5 |     for (x=1,x<=9,x++){
      |                      ^
      |                      ;
main.c:5:22: error: expected expression before ')' token
main.c:6:26: error: expected ';' before ')' token
    6 |         for (y=1,y<=9,y++){
      |                          ^
      |                          ;
main.c:6:26: error: expected expression before ')' token
main.c:7:18: error: expected ';' before 'printf'
    7 |             z=x*y
      |                  ^
      |                  ;
    8 |             printf("%dx%d=%d\n",x,y,z);
      |             ~~~~~~
Language: C

#include <stdio.h>

int main(){
    int x,y,z;
    for (x=1,x<=9;x++){
        for (y=1,y<=9;y++){
            z=x*y
            printf("%dx%d=%d\n",x,y,z);
        }    
    }
    
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:22: error: expected ';' before ')' token
    5 |     for (x=1,x<=9;x++){
      |                      ^
      |                      ;
main.c:6:26: error: expected ';' before ')' token
    6 |         for (y=1,y<=9;y++){
      |                          ^
      |                          ;
main.c:7:18: error: expected ';' before 'printf'
    7 |             z=x*y
      |                  ^
      |                  ;
    8 |             printf("%dx%d=%d\n",x,y,z);
      |             ~~~~~~
Language: C

#include <stdio.h>

int main(void)
{
    int x,y,z;
    for (x=1,x<=9;x++){
        for (y=1,y<=9;y++){
            z=x*y;
            printf("%dx%d=%d\n",x,y,z);
        }    
    }
    
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:22: error: expected ';' before ')' token
    6 |     for (x=1,x<=9;x++){
      |                      ^
      |                      ;
main.c:7:26: error: expected ';' before ')' token
    7 |         for (y=1,y<=9;y++){
      |                          ^
      |                          ;
Language: C

#include <stdio.h>

int main(){
    /* dead??????????????? */)
    int a,b,dead;
    a=1;
    b=1;
    dead=0;
while (dead=0){
    printf("%dx%d=%d\n",a,b,a*b);

    a++;
    b++;

    if (b==9)
    {
        b=1;
        a++;
    }

    if (a==9 && b==9)
    {
        dead = 1;
    }
}
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:30: error: expected statement before ')' token
    4 |     /* dead??????????????? */)
      |                              ^
Language: C

#include<stdio.h>

int main(){
    int i;
    for(i=1;i<10;i++) {
      for(i=j;j<10;j++) {
        printf("%dx%d=%d\n",i,j,i*j);
      }
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:13: error: 'j' undeclared (first use in this function)
    6 |       for(i=j;j<10;j++) {
      |             ^
main.c:6:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(){
    1x1=1
    1x2=2
    .
    .
    9x8=72
    9x9=81
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:5: error: invalid suffix "x1" on integer constant
    4 |     1x1=1
      |     ^~~
main.c:5:5: error: invalid suffix "x2" on integer constant
    5 |     1x2=2
      |     ^~~
main.c:4:10: error: expected ';' before numeric constant
    4 |     1x1=1
      |          ^
      |          ;
    5 |     1x2=2
      |     ~~~   
main.c:8:5: error: invalid suffix "x8" on integer constant
    8 |     9x8=72
      |     ^~~
main.c:9:5: error: invalid suffix "x9" on integer constant
    9 |     9x9=81
      |     ^~~
Language: C

#include<stdio.h>

int main(){
    int i,j,answer;

    for(i=1;i<=9;i++)
    {
         for(j=1;j<=9;j++)
         {
             answer = i * j;
             print("%dx%d=%d\n",i,j,answer)
         }
    }

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:14: error: implicit declaration of function 'print'; did you mean 'printf'? [-Wimplicit-function-declaration]
   11 |              print("%dx%d=%d\n",i,j,answer)
      |              ^~~~~
      |              printf
main.c:11:44: error: expected ';' before '}' token
   11 |              print("%dx%d=%d\n",i,j,answer)
      |                                            ^
      |                                            ;
   12 |          }
      |          ~
Language: C

#include<stdio.h>

int main(){
    int i,j,answer;

    for(i=1;i<=9;i++)
    {
         for(j=1;j<=9;j++)
         {
             answer = i * j;
             print("%dx%d=%d\n",i,j,answer);
         }
    }

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:14: error: implicit declaration of function 'print'; did you mean 'printf'? [-Wimplicit-function-declaration]
   11 |              print("%dx%d=%d\n",i,j,answer);
      |              ^~~~~
      |              printf