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

#include <iostream>
#include <iomanip>
using namespace std;

int main(){
	double r, m, e;
	const double p = M_PI;
	cin >> r;
	m = r*r*p;
	e = 2*r*p;
	cout << fixed;
	cout << setprecision(10) << m << " " << e << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:26: error: 'M_PI' was not declared in this scope
    7 |         const double p = M_PI;
      |                          ^~~~
Language: C++

#include <iostream>
using namespace std;
int main (){
	double r;
	cin >> r;
	cout << setprecision(10) << r*r*3.141592653589 << r*2*3.141592653589 <<endl;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:6:17: error: 'setprecision' was not declared in this scope
    6 |         cout << setprecision(10) << r*r*3.141592653589 << r*2*3.141592653589 <<endl;
      |                 ^~~~~~~~~~~~
a.cc:2:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    1 | #include <iostream>
  +++ |+#include <iomanip>
    2 | using namespace std;
Language: C++

#include<bits/stdc++.h>
using namespace std;
cout<<fixed<<setprecision(12);

int main(){
int r,s,l;
cin>>r;
(double)s=(s^2)*3.14159265;
(double)l=2*r*3.12159265;
cout<<s<<" "<<l<<endl;
return 0;
}


Compiler output:
a.cc:3:1: error: 'cout' does not name a type
    3 | cout<<fixed<<setprecision(12);
      | ^~~~
a.cc: In function 'int main()':
a.cc:8:1: error: lvalue required as left operand of assignment
    8 | (double)s=(s^2)*3.14159265;
      | ^~~~~~~~~
a.cc:9:1: error: lvalue required as left operand of assignment
    9 | (double)l=2*r*3.12159265;
      | ^~~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
cout<<fixed<<setprecision(12);

int main(){
int r,s,l;
cin>>r;
(double)s=(r^2)*3.14159265;
(double)l=2*r*3.12159265;
cout<<s<<" "<<l<<endl;
return 0;
}


Compiler output:
a.cc:3:1: error: 'cout' does not name a type
    3 | cout<<fixed<<setprecision(12);
      | ^~~~
a.cc: In function 'int main()':
a.cc:8:1: error: lvalue required as left operand of assignment
    8 | (double)s=(r^2)*3.14159265;
      | ^~~~~~~~~
a.cc:9:1: error: lvalue required as left operand of assignment
    9 | (double)l=2*r*3.12159265;
      | ^~~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
cout<<fixed<<setprecision(12);

int main(){
int r,s,l;
cin>>r;
(double)s=r*r*3.14159265;
(double)l=2*r*3.12159265;
cout<<s<<" "<<l<<endl;
return 0;
}


Compiler output:
a.cc:3:1: error: 'cout' does not name a type
    3 | cout<<fixed<<setprecision(12);
      | ^~~~
a.cc: In function 'int main()':
a.cc:8:1: error: lvalue required as left operand of assignment
    8 | (double)s=r*r*3.14159265;
      | ^~~~~~~~~
a.cc:9:1: error: lvalue required as left operand of assignment
    9 | (double)l=2*r*3.12159265;
      | ^~~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
cout<<fixed<<setprecision(12);

int main(){
int r,s,l;
cin>>r;
s=r*r*3.14159265;
l=2*r*3.12159265;
cout<<s<<" "<<l<<endl;
return 0;
}


Compiler output:
a.cc:3:1: error: 'cout' does not name a type
    3 | cout<<fixed<<setprecision(12);
      | ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
cout<<fixed<<setprecision(12);

int main(){
int r,s,l;
cin>>r;
s=r*r*3;
l=2*r*3;
cout<<s<<" "<<l<<endl;
return 0;
}


Compiler output:
a.cc:3:1: error: 'cout' does not name a type
    3 | cout<<fixed<<setprecision(12);
      | ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
cout<<fixed<<setprecision(12);

int main(){
double r,s,l;
cin>>r;
s=r*r*3;
l=2*r*3;
cout<<s<<" "<<l<<endl;
return 0;
}


Compiler output:
a.cc:3:1: error: 'cout' does not name a type
    3 | cout<<fixed<<setprecision(12);
      | ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
cout<<fixed<<setprecision(12);

int main(){
double r,s,l;
cin>>r;
s=r*r;
l=2*r;
cout<<s<<" "<<l<<endl;
return 0;
}


Compiler output:
a.cc:3:1: error: 'cout' does not name a type
    3 | cout<<fixed<<setprecision(12);
      | ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
cout<<fixed<<setprecision(12);
double r,s,l;
cin>>r;
double s=r*r*3.12159265;
double l=2*r*3.14159265;
cout<<s<<" "<<l<<endl;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: redeclaration of 'double s'
    8 | double s=r*r*3.12159265;
      |        ^
a.cc:6:10: note: 'double s' previously declared here
    6 | double r,s,l;
      |          ^
a.cc:9:8: error: redeclaration of 'double l'
    9 | double l=2*r*3.14159265;
      |        ^
a.cc:6:12: note: 'double l' previously declared here
    6 | double r,s,l;
      |            ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
cout<<fixed<<setprecision(12);
double r;
cin>>r;
double p=3.14159265
double s=r*r*p;
double l=2*r*p;
cout<<s<<" "<<l<<endl;
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:1: error: expected ',' or ';' before 'double'
    9 | double s=r*r*p;
      | ^~~~~~
a.cc:11:7: error: 's' was not declared in this scope
   11 | cout<<s<<" "<<l<<endl;
      |       ^
Language: C++

#include <bits/stdc++.h>
using namespace

int main(){
    int a,b,c,d;
    cin >> a;
    b = a*a*3.14;
    c = 2*3.14*a;
    cout <<b << " ";
    cout << c;
}


Compiler output:
a.cc:4:1: error: expected identifier before 'int'
    4 | int main(){
      | ^~~
a.cc:2:16: error: expected ';' before 'int'
    2 | using namespace
      |                ^
      |                ;
    3 | 
    4 | int main(){
      | ~~~             
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |     cin >> a;
      |     ^~~
      |     std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:9:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |     cout <<b << " ";
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

//itp1 -topic1_a
#include <bits/stdc++.h>
using namespace std;

int main(){
 cout<<fixed<<setprecision(6);
 double r;
 cin >>r;

 double PI=acos(−1);//cos(π) = −1 ->acos(−1)=π;
 double area=r*r*PI;
 double cir=(r+r)*PI;
 cout<<area<<” ”<<cir<<endl;
 

}


Compiler output:
a.cc:10:17: error: extended character − is not valid in an identifier
   10 |  double PI=acos(−1);//cos(π) = −1 ->acos(−1)=π;
      |                 ^
a.cc:13:14: error: extended character ” is not valid in an identifier
   13 |  cout<<area<<” ”<<cir<<endl;
      |              ^
a.cc:13:16: error: extended character ” is not valid in an identifier
   13 |  cout<<area<<” ”<<cir<<endl;
      |                ^
a.cc: In function 'int main()':
a.cc:10:17: error: '\U000022121' was not declared in this scope
   10 |  double PI=acos(−1);//cos(π) = −1 ->acos(−1)=π;
      |                 ^~
a.cc:13:14: error: '\U0000201d' was not declared in this scope
   13 |  cout<<area<<” ”<<cir<<endl;
      |              ^
Language: C++

#include <bits/stdc++.h>
using namespace

int main(){
    int a,b,c,d;
    cin >> a;
    cout << fixed << setprecision(12);
    b = a*a*3.14;
    c = 2*3.14*a;
    cout <<b << " ";
    cout << c<<endl;
}
    


Compiler output:
a.cc:4:1: error: expected identifier before 'int'
    4 | int main(){
      | ^~~
a.cc:2:16: error: expected ';' before 'int'
    2 | using namespace
      |                ^
      |                ;
    3 | 
    4 | int main(){
      | ~~~             
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |     cin >> a;
      |     ^~~
      |     std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |     cout << fixed << setprecision(12);
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:13: error: 'fixed' was not declared in this scope
    7 |     cout << fixed << setprecision(12);
      |             ^~~~~
a.cc:7:13: note: suggested alternatives:
In file included from /usr/include/c++/14/streambuf:43,
                 from /usr/include/c++/14/bits/streambuf_iterator.h:35,
                 from /usr/include/c++/14/iterator:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:54:
/usr/include/c++/14/bits/ios_base.h:1104:3: note:   'std::fixed'
 1104 |   fixed(ios_base& __base)
      |   ^~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:198:
/usr/include/c++/14/charconv:622:21: note:   'std::chars_format::fixed'
  622 |     scientific = 1, fixed = 2, hex = 4, general = fixed | scientific
      |                     ^~~~~
a.cc:7:22: error: 'setprecision' was not declared in this scope; did you mean 'std::setprecision'?
    7 |     cout << fixed << setprecision(12);
      |                      ^~~~~~~~~~~~
      |                      std::setprecision
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:143:
/usr/include/c++/14/iomanip:202:3: note: 'std::setprecision' declared here
  202 |   setprecision(int __n)
      |   ^~~~~~~~~~~~
a.cc:11:16: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   11 |     cout << c<<endl;
      |                ^~~~
      |                std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

//itp1 -topic1_a
#include <bits/stdc++.h>
using namespace std;

int main(){
 cout<<fixed<<setprecision(6);
 double r;
 cin >>r;

 double PI=acos(-1);//cos(π) = -1 ->acos(-1)=π;
 double area=r*r*PI;
 double cir=(r+r)*PI;
 cout<<area<<” ”<<cir<<endl;
 

}


Compiler output:
a.cc:13:14: error: extended character ” is not valid in an identifier
   13 |  cout<<area<<” ”<<cir<<endl;
      |              ^
a.cc:13:16: error: extended character ” is not valid in an identifier
   13 |  cout<<area<<” ”<<cir<<endl;
      |                ^
a.cc: In function 'int main()':
a.cc:13:14: error: '\U0000201d' was not declared in this scope
   13 |  cout<<area<<” ”<<cir<<endl;
      |              ^
Language: C++

//itp1 -topic1_a
#include <bits/stdc++.h>
using namespace std;

int main(){
 cout<<fixed<<setprecision(12);
 double r;
 cin >>r;

 double PI=acos(-1);//cos(π) = -1 ->acos(-1)=π;
 double area=r*r*PI;
 double cir=(r+r)*PI;
 cout<<area<<” ”<<cir<<endl;
 

}


Compiler output:
a.cc:13:14: error: extended character ” is not valid in an identifier
   13 |  cout<<area<<” ”<<cir<<endl;
      |              ^
a.cc:13:16: error: extended character ” is not valid in an identifier
   13 |  cout<<area<<” ”<<cir<<endl;
      |                ^
a.cc: In function 'int main()':
a.cc:13:14: error: '\U0000201d' was not declared in this scope
   13 |  cout<<area<<” ”<<cir<<endl;
      |              ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
    int a,b,c,d;
    cin >> r;
    cout << fixed << setprecision(12);
    double r;
    
    double PI = acos(-1);
    double area = r*r*PI;
    double cir = (r+r)*PI;
    cout << area <<" "<<cir<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:12: error: 'r' was not declared in this scope
    6 |     cin >> r;
      |            ^
Language: C++

//itp1 -topic1_a
#include <bits/stdc++.h>
using namespace std;

int main(){
 cout<<fixed<<setprecision(6);
 double r;
 cin >>r;

 double PI=acos(-1);//cos(π) = -1 ->acos(-1)=π
 double area=r*r*PI;
 double cir=(r+r)*PI;
 cout<<area<<” ”<<cir<<endl;
 

}


Compiler output:
a.cc:13:14: error: extended character ” is not valid in an identifier
   13 |  cout<<area<<” ”<<cir<<endl;
      |              ^
a.cc:13:16: error: extended character ” is not valid in an identifier
   13 |  cout<<area<<” ”<<cir<<endl;
      |                ^
a.cc: In function 'int main()':
a.cc:13:14: error: '\U0000201d' was not declared in this scope
   13 |  cout<<area<<” ”<<cir<<endl;
      |              ^
Language: C++

#include <iostream>
#include <math.h>
using namespace std;
int main(void){
    int n;
    cin >> r;
    double ference;
    ference = double(r)*2*M_PI;
    double area;
    area = pow(double(r))*MPI
    cout << area << " " << ference << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:12: error: 'r' was not declared in this scope
    6 |     cin >> r;
      |            ^
a.cc:10:27: error: 'MPI' was not declared in this scope; did you mean 'M_PI'?
   10 |     area = pow(double(r))*MPI
      |                           ^~~
      |                           M_PI
Language: C++

#include <iostream>
#include <math.h>
using namespace std;
int main(void){
    int r;
    cin >> r;
    double ference;
    ference = double(r)*2*M_PI;
    double area;
    area = pow(double(r))*MPI
    cout << area << " " << ference << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:15: error: no matching function for call to 'pow(double)'
   10 |     area = pow(double(r))*MPI
      |            ~~~^~~~~~~~~~~
In file included from /usr/include/c++/14/math.h:36,
                 from a.cc:2:
/usr/include/c++/14/cmath:1074:5: note: candidate: 'template<class _Tp, class _Up> constexpr typename __gnu_cxx::__promote_2<_Tp, _Up>::__type std::pow(_Tp, _Up)'
 1074 |     pow(_Tp __x, _Up __y)
      |     ^~~
/usr/include/c++/14/cmath:1074:5: note:   candidate expects 2 arguments, 1 provided
In file included from /usr/include/features.h:523,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/os_defines.h:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/c++config.h:683,
                 from /usr/include/c++/14/bits/requires_hosted.h:31,
                 from /usr/include/c++/14/iostream:38,
                 from a.cc:1:
/usr/include/x86_64-linux-gnu/bits/mathcalls.h:173:1: note: candidate: 'double pow(double, double)'
  173 | __MATHCALL_VEC (pow,, (_Mdouble_ __x, _Mdouble_ __y));
      | ^~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/bits/mathcalls.h:173:1: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/cmath:380:3: note: candidate: 'constexpr long double std::pow(long double, long double)'
  380 |   pow(long double __x, long double __y)
      |   ^~~
/usr/include/c++/14/cmath:380:3: note:   candidate expects 2 arguments, 1 provided
/usr/include/c++/14/cmath:376:3: note: candidate: 'constexpr float std::pow(float, float)'
  376 |   pow(float __x, float __y)
      |   ^~~
/usr/include/c++/14/cmath:376:3: note:   candidate expects 2 arguments, 1 provided
a.cc:10:27: error: 'MPI' was not declared in this scope; did you mean 'M_PI'?
   10 |     area = pow(double(r))*MPI
      |                           ^~~
      |                           M_PI
Language: C++

#include <iostream>
#include <math.h>
using namespace std;
int main(void){
    int r;
    cin >> r;
    double ference;
    ference = double(r)*2*M_PI;
    double area;
    area = pow(double(r),2) *MPI
    cout << area << " " << ference << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:30: error: 'MPI' was not declared in this scope; did you mean 'M_PI'?
   10 |     area = pow(double(r),2) *MPI
      |                              ^~~
      |                              M_PI
Language: C++

#include <iostream>
#include <math.h>
#define PI = 3.141592653589;
using namespace std;
int main(void){
    double r;
    cin >> r;
    double ference;
    ference = r*2*PI;
    double area;
    area = pow(r,2)*PI;
    cout << area << " " << ference << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:12: error: expected primary-expression before '=' token
    3 | #define PI = 3.141592653589;
      |            ^
a.cc:9:19: note: in expansion of macro 'PI'
    9 |     ference = r*2*PI;
      |                   ^~
a.cc:3:12: error: expected primary-expression before '=' token
    3 | #define PI = 3.141592653589;
      |            ^
a.cc:11:21: note: in expansion of macro 'PI'
   11 |     area = pow(r,2)*PI;
      |                     ^~
Language: C++

#include <iostream>
#include <math.h>
#define PI = 3.141592653589
using namespace std;
int main(void){
    double r;
    cin >> r;
    double ference;
    ference = r*2*PI;
    double area;
    area = pow(r,2)*PI;
    cout << area << " " << ference << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:12: error: expected primary-expression before '=' token
    3 | #define PI = 3.141592653589
      |            ^
a.cc:9:19: note: in expansion of macro 'PI'
    9 |     ference = r*2*PI;
      |                   ^~
a.cc:3:12: error: expected primary-expression before '=' token
    3 | #define PI = 3.141592653589
      |            ^
a.cc:11:21: note: in expansion of macro 'PI'
   11 |     area = pow(r,2)*PI;
      |                     ^~
Language: C++

#include <math.h>
main() {
double a;
scanf("%lf", &a);
printf("%f %f", a * a * M_PI,  2 * a * M_PI);
}


Compiler output:
a.cc:2:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    2 | main() {
      | ^~~~
a.cc: In function 'int main()':
a.cc:4:1: error: 'scanf' was not declared in this scope
    4 | scanf("%lf", &a);
      | ^~~~~
a.cc:5:1: error: 'printf' was not declared in this scope
    5 | printf("%f %f", a * a * M_PI,  2 * a * M_PI);
      | ^~~~~~
a.cc:2:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
    1 | #include <math.h>
  +++ |+#include <cstdio>
    2 | main() {
Language: C++

v#include <bits/stdc++.h>
using namespace std;

int main(){
  cout << fixed << setprecision(12);
 
  double r; 
  cin>>r;

  double PI = acos(-1); 
  double area = r * r * PI;
  double cir = (r + r)* PI;
  cout<<area<<" "<<cir<<endl;

  return 0 ;
}



Compiler output:
a.cc:1:2: error: stray '#' in program
    1 | v#include <bits/stdc++.h>
      |  ^
a.cc:1:1: error: 'v' does not name a type
    1 | v#include <bits/stdc++.h>
      | ^
a.cc: In function 'int main()':
a.cc:5:3: error: 'cout' was not declared in this scope
    5 |   cout << fixed << setprecision(12);
      |   ^~~~
a.cc:5:11: error: 'fixed' was not declared in this scope
    5 |   cout << fixed << setprecision(12);
      |           ^~~~~
a.cc:5:20: error: 'setprecision' was not declared in this scope
    5 |   cout << fixed << setprecision(12);
      |                    ^~~~~~~~~~~~
a.cc:8:3: error: 'cin' was not declared in this scope
    8 |   cin>>r;
      |   ^~~
a.cc:10:15: error: 'acos' was not declared in this scope
   10 |   double PI = acos(-1);
      |               ^~~~
a.cc:13:25: error: 'endl' was not declared in this scope
   13 |   cout<<area<<" "<<cir<<endl;
      |                         ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){

cout<<fixed<<seprecision(12);

double r;
cin>>r;

double PI=acos(-1);
double area =r*r*PI;
double cir =(r+r)*PI;

cout<<area<<" "<<cir<<endl;

return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:6:14: error: 'seprecision' was not declared in this scope
    6 | cout<<fixed<<seprecision(12);
      |              ^~~~~~~~~~~
Language: C++

include <bits/stdc++.h>
using namespace std;

int main(){
  cout << fixed <<setprecision(12);

  double r;
  cin>>r;

  double PI = acos(-1);
  double area = r * r * PI;
  double cir = (r + r) * PI;
  cout<<area<<" "<<cir<<endl;

  return 0;

} 



Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <bits/stdc++.h>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:5:3: error: 'cout' was not declared in this scope
    5 |   cout << fixed <<setprecision(12);
      |   ^~~~
a.cc:5:11: error: 'fixed' was not declared in this scope
    5 |   cout << fixed <<setprecision(12);
      |           ^~~~~
a.cc:5:19: error: 'setprecision' was not declared in this scope
    5 |   cout << fixed <<setprecision(12);
      |                   ^~~~~~~~~~~~
a.cc:8:3: error: 'cin' was not declared in this scope
    8 |   cin>>r;
      |   ^~~
a.cc:10:15: error: 'acos' was not declared in this scope
   10 |   double PI = acos(-1);
      |               ^~~~
a.cc:13:25: error: 'endl' was not declared in this scope
   13 |   cout<<area<<" "<<cir<<endl;
      |                         ^~~~
Language: C++

include <bits/stdc++.h>
using namespace std;

int main(){
  cout << fixed << setprecision(12);

  double r;
  cin>>r;

  double PI = acos(-1);
  double area = r * r * PI;
  double cir = (r + r) * PI;
  cout<<area<<" "<<cir<<endl;

  return 0;

} 



Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <bits/stdc++.h>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:5:3: error: 'cout' was not declared in this scope
    5 |   cout << fixed << setprecision(12);
      |   ^~~~
a.cc:5:11: error: 'fixed' was not declared in this scope
    5 |   cout << fixed << setprecision(12);
      |           ^~~~~
a.cc:5:20: error: 'setprecision' was not declared in this scope
    5 |   cout << fixed << setprecision(12);
      |                    ^~~~~~~~~~~~
a.cc:8:3: error: 'cin' was not declared in this scope
    8 |   cin>>r;
      |   ^~~
a.cc:10:15: error: 'acos' was not declared in this scope
   10 |   double PI = acos(-1);
      |               ^~~~
a.cc:13:25: error: 'endl' was not declared in this scope
   13 |   cout<<area<<" "<<cir<<endl;
      |                         ^~~~
Language: C++

//itp1_topic4_b
#include <bits/stdc++.h>
using namespace std;
 
int main(){
  cout << fixed << setprecisi2on(12);

  double r;
  cin>>r;

  double PI = acos(-1);
  double area = r * r * PI;
  double cir = (r + r) * PI;
  cout<<area<<" "<<cir<<endl;
 
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:20: error: 'setprecisi2on' was not declared in this scope
    6 |   cout << fixed << setprecisi2on(12);
      |                    ^~~~~~~~~~~~~
Language: C++

//itp1_topic4_b
#include <bits/stdc++.h>
using namespace std;
 
int main(){
  cout << fixed << setprecisi2on(5);

  double r;
  cin>>r;

  double PI = acos(-1);
  double area = r * r * PI;
  double cir = (r + r) * PI;
  cout<<area<<" "<<cir<<endl;
 
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:20: error: 'setprecisi2on' was not declared in this scope
    6 |   cout << fixed << setprecisi2on(5);
      |                    ^~~~~~~~~~~~~
Language: C++

#include <iostream>
#include <cstdio>
using namespace std;

int main(){
double r;
cin >> r;
printf("%.5f %.5f",pi*r*r,2*pi*r);
}



Compiler output:
a.cc: In function 'int main()':
a.cc:8:20: error: 'pi' was not declared in this scope
    8 | printf("%.5f %.5f",pi*r*r,2*pi*r);
      |                    ^~
Language: C++

#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
 
int main(){
double r;
cin >> r;
printf("%.5f %.5f",pi*r*r,2*pi*r);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:20: error: 'pi' was not declared in this scope
    9 | printf("%.5f %.5f",pi*r*r,2*pi*r);
      |                    ^~
Language: C++

#include <iostream>
#include <iomanip>
 int main() {
  int r;
  std::cin >> r;
  double a, b;
  a = 2*r*3.141592653589;
  b = r*r*3.141592653589
  std::cout << std::fixed << std::setprecision(7);
  std::cout << a << " " << b <<std::endl;



 return 0;


}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:25: error: expected ';' before 'std'
    8 |   b = r*r*3.141592653589
      |                         ^
      |                         ;
    9 |   std::cout << std::fixed << std::setprecision(7);
      |   ~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

  int main(){
cout<< fixed << setprecision(12);

double r;
cin>>r;

double x =acos(-1);

double s = r * r * x;

double v = (r + r) * x;
cout<<s<<" "<<V<<endl;

return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:15: error: 'V' was not declared in this scope
   15 | cout<<s<<" "<<V<<endl;
      |               ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
    cour<<fixed<<setprecision;

    double r;
    cin>>r;

    cout<<r*r*π<<" ";
    cout<<2*r*π<<" ";
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'cour' was not declared in this scope
    5 |     cour<<fixed<<setprecision;
      |     ^~~~
a.cc:10:15: error: '\U000003c0' was not declared in this scope
   10 |     cout<<r*r*π<<" ";
      |               ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
    cour<<fixed<<setprecision;

    double r;
    cin>>r;

    cout<<r*r*π<<" ";
    cout<<2*r*π<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'cour' was not declared in this scope
    5 |     cour<<fixed<<setprecision;
      |     ^~~~
a.cc:10:15: error: '\U000003c0' was not declared in this scope
   10 |     cout<<r*r*π<<" ";
      |               ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
    cour<<fixed<<setprecision;

    double r;
    cin>>r;

    cout<<r*r*π<<" "<<2*r*π<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'cour' was not declared in this scope
    5 |     cour<<fixed<<setprecision;
      |     ^~~~
a.cc:10:15: error: '\U000003c0' was not declared in this scope
   10 |     cout<<r*r*π<<" "<<2*r*π<<endl;
      |               ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
    cout<<fixed<<setprecision;

    double r;
    cin>>r;

    cout<<r*r*π<<" "<<2*r*π<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:15: error: '\U000003c0' was not declared in this scope
   10 |     cout<<r*r*π<<" "<<2*r*π<<endl;
      |               ^
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
    cout<<fixed<<setprecision(12);

    double r;
    cin>>r;

    cout<<r*r*π<<" "<<2*r*π<<endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:15: error: '\U000003c0' was not declared in this scope
   10 |     cout<<r*r*π<<" "<<2*r*π<<endl;
      |               ^
Language: C++

#include<bits/std.h>
using namespace std;

int main(){
    cout<<fixed<<setprecision(12);
    int r;
    double pi=3.141592653589;
    cout<<pi*pi*r<<" "<<pi*r*2<<endl;
    return 0;
}


Compiler output:
a.cc:1:9: fatal error: bits/std.h: No such file or directory
    1 | #include<bits/std.h>
      |         ^~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
using namespace std;


int main(){

   double r;
   cin>>r;

   double PAI = acos(-1);
   double area = r * r * PAI;
   double cir = (r * 2) *PAI
   cout<<area<<" "<<cir<<endl;


 return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:13:4: error: expected ',' or ';' before 'cout'
   13 |    cout<<area<<" "<<cir<<endl;
      |    ^~~~
Language: C++

#include<iostream>
#include<cstdio>
int main(){
double r;
cin>>r;
printf("%lf %lf\n,2*r*3.14159265358979,r*r*3.14159265358979);
return 0;
}


Compiler output:
a.cc:6:8: warning: missing terminating " character
    6 | printf("%lf %lf\n,2*r*3.14159265358979,r*r*3.14159265358979);
      |        ^
a.cc:6:8: error: missing terminating " character
    6 | printf("%lf %lf\n,2*r*3.14159265358979,r*r*3.14159265358979);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:5:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 | cin>>r;
      | ^~~
      | std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:1: error: expected primary-expression before 'return'
    7 | return 0;
      | ^~~~~~
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;
int main(){
double r;
cin>>r;
printf("%lf %lf\n,2*r*3.14159265358979,r*r*3.14159265358979);
return 0;
}


Compiler output:
a.cc:7:8: warning: missing terminating " character
    7 | printf("%lf %lf\n,2*r*3.14159265358979,r*r*3.14159265358979);
      |        ^
a.cc:7:8: error: missing terminating " character
    7 | printf("%lf %lf\n,2*r*3.14159265358979,r*r*3.14159265358979);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:8:1: error: expected primary-expression before 'return'
    8 | return 0;
      | ^~~~~~
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;
int main(){
double r;
double p=3.14159265358979;
cin>>r;
printf("%lf %lf\n,2*r*p,r*r*p);
return 0;
}


Compiler output:
a.cc:8:8: warning: missing terminating " character
    8 | printf("%lf %lf\n,2*r*p,r*r*p);
      |        ^
a.cc:8:8: error: missing terminating " character
    8 | printf("%lf %lf\n,2*r*p,r*r*p);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:9:1: error: expected primary-expression before 'return'
    9 | return 0;
      | ^~~~~~
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;
int main(){
double r;
cin>>r;
printf("%lf %lf\n,r*r*3.14159265358979,2*r*3.14159265358979);
return 0;
}


Compiler output:
a.cc:7:8: warning: missing terminating " character
    7 | printf("%lf %lf\n,r*r*3.14159265358979,2*r*3.14159265358979);
      |        ^
a.cc:7:8: error: missing terminating " character
    7 | printf("%lf %lf\n,r*r*3.14159265358979,2*r*3.14159265358979);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:8:1: error: expected primary-expression before 'return'
    8 | return 0;
      | ^~~~~~
Language: C++

#include<iostream>
#include<cstdio>
using namespace std;
int main(){
double r;
double p=3.14159265358979;
cin>>r;
printf("%lf %lf\n,r*r*p,2*r*p);
return 0;
}


Compiler output:
a.cc:8:8: warning: missing terminating " character
    8 | printf("%lf %lf\n,r*r*p,2*r*p);
      |        ^
a.cc:8:8: error: missing terminating " character
    8 | printf("%lf %lf\n,r*r*p,2*r*p);
      |        ^~~~~~~~~~~~~~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:9:1: error: expected primary-expression before 'return'
    9 | return 0;
      | ^~~~~~
Language: C++

#include<stdio.h>
int main(void) {
	int r;
	scanf_s("%d", &r);
	double s,l;
	s = r * r*3.121592653589;
	l = 2 * r*3.121592653589;
		printf("%f %f\n", s, l);

		return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    4 |         scanf_s("%d", &r);
      |         ^~~~~~~
      |         scanf
Language: C++

#include <iostream>
using namespace std;

int main() {
	double r,r2,r3;
	double PI=3.141592653589;
	cin >>r;
	r2=2*r*PI;
	r3=r*r*PI;
	printf("%.6f %.6f\n",r2,r3);
	return 0;


Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: expected '}' at end of input
   11 |         return 0;
      |                  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

/*
 * iraira.cpp
 *
 *  Created on: 2018/05/02
 *      Author: J01003
 */
/*
 * taete.cpp
 *
 *  Created on: 2018/04/26
 *      Author: J01003
 */
#include<iostream>
#include<stdio.h>
using namespace std;

int main(){
    int a,b,r;
    double f1,f2;
    scanf("%lf %lf", &f1,&f2);
    cin>>r;
    f1 = r*r*3.141592653589;
    f2= 2*r*3.141592653589
    printf("%.10lf\n %.10lf\n",f1,f2);
	return 0;
}




Compiler output:
a.cc: In function 'int main()':
a.cc:23:27: error: expected ';' before 'printf'
   23 |     f2= 2*r*3.141592653589
      |                           ^
      |                           ;
   24 |     printf("%.10lf\n %.10lf\n",f1,f2);
      |     ~~~~~~
Language: C++

import java.io.PrintWriter;
import java.util.Scanner;


public class AOJ0103 {

	public static void main(String[] args) {
		Scanner in=new Scanner(System.in);
		PrintWriter out=new PrintWriter(System.out);
		double r=in.nextDouble();
		out.printf("%f %f",r*r*Math.PI,2*r*Math.PI);
		out.flush();
	}

}



Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.io.PrintWriter;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:2:1: error: 'import' does not name a type
    2 | import java.util.Scanner;
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:5:1: error: expected unqualified-id before 'public'
    5 | public class AOJ0103 {
      | ^~~~~~
Language: C++

import java.io.*;
import java.util.*;


public class AOJ0103 {

	public static void main(String[] args) {
		Scanner in=new Scanner(System.in);
		PrintWriter out=new PrintWriter(System.out);
		double r=in.nextDouble();
		out.printf("%f %f",r*r*Math.PI,2*r*Math.PI);
		out.flush();
	}

}



Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.io.*;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:2:1: error: 'import' does not name a type
    2 | import java.util.*;
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:5:1: error: expected unqualified-id before 'public'
    5 | public class AOJ0103 {
      | ^~~~~~
Language: C++

import java.io.PrintWriter;
import java.util.*;


public class AOJ0103 {

	public static void main(String[] args) {
		Scanner in=new Scanner(System.in);
		PrintWriter out=new PrintWriter(System.out);
		double r=in.nextDouble();
		out.printf("%f %f",r*r*Math.PI,2*r*Math.PI);
		out.flush();
	}

}



Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.io.PrintWriter;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:2:1: error: 'import' does not name a type
    2 | import java.util.*;
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:5:1: error: expected unqualified-id before 'public'
    5 | public class AOJ0103 {
      | ^~~~~~
Language: C++

import java.io.PrintWriter;
import java.util.*;


public class Main {

	public static void main(String[] args) {
		Scanner in=new Scanner(System.in);
		PrintWriter out=new PrintWriter(System.out);
		double r=in.nextDouble();
		out.printf("%f %f",r*r*Math.PI,2*r*Math.PI);
		out.flush();
	}

}



Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.io.PrintWriter;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:2:1: error: 'import' does not name a type
    2 | import java.util.*;
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:5:1: error: expected unqualified-id before 'public'
    5 | public class Main {
      | ^~~~~~
Language: C++

#include<cstdio>
using namespace std;
int main()
{
    double r;
    cin>>r;
    printf("%.6lf %.6lf\n",3.14159268*r*r,2*3.14159268*r);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope
    6 |     cin>>r;
      |     ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include<cstdio>
  +++ |+#include <iostream>
    2 | using namespace std;
Language: C++

import java.lang.reflect.Array;
        import java.util.ArrayList;
        import java.util.Collections;
        import java.util.Scanner;
        import java.util.stream.Stream;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        double r = sc.nextDouble();

        System.out.printf("%.6f", Math.PI * r * r + " ");
        System.out.printf("%.6f", Math.PI * 2 * r);
    }
}



Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.lang.reflect.Array;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:2:9: error: 'import' does not name a type
    2 |         import java.util.ArrayList;
      |         ^~~~~~
a.cc:2:9: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:9: error: 'import' does not name a type
    3 |         import java.util.Collections;
      |         ^~~~~~
a.cc:3:9: note: C++20 'import' only available with '-fmodules-ts'
a.cc:4:9: error: 'import' does not name a type
    4 |         import java.util.Scanner;
      |         ^~~~~~
a.cc:4:9: note: C++20 'import' only available with '-fmodules-ts'
a.cc:5:9: error: 'import' does not name a type
    5 |         import java.util.stream.Stream;
      |         ^~~~~~
a.cc:5:9: note: C++20 'import' only available with '-fmodules-ts'
a.cc:7:1: error: expected unqualified-id before 'public'
    7 | public class Main {
      | ^~~~~~
Language: C++

#include<iostream>
#include<stdio.h>
#include <cstdio>
using namespace std;
int main(){
	float r,C;
	scanf_s("%f", &r);
	printf("%.16f\n", r);
	C = 3.14592653589;
	printf("%.16f ",r * r * C );
	printf("%.16f\n",r * 2 * C );

	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    7 |         scanf_s("%f", &r);
      |         ^~~~~~~
      |         scanf
Language: C++

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

int main(){
  double a;
  scanf("%lf, &a);
  printf("%lf %lf\n", M_PI*a*a, 2*M_PI*a);
}


Compiler output:
a.cc:6:9: warning: missing terminating " character
    6 |   scanf("%lf, &a);
      |         ^
a.cc:6:9: error: missing terminating " character
    6 |   scanf("%lf, &a);
      |         ^~~~~~~~~~
a.cc: In function 'int main()':
a.cc:7:42: error: expected ')' before ';' token
    7 |   printf("%lf %lf\n", M_PI*a*a, 2*M_PI*a);
      |                                          ^
      |                                          )
a.cc:6:8: note: to match this '('
    6 |   scanf("%lf, &a);
      |        ^
Language: C++

#define _USE_MATH_DEFINES
#include "stdafx.h"
#include<iostream>
#include<stdio.h>
#include<iomanip>
#include<cmath>



using namespace std;


int main(void)
{
	double r, h, H, m, M;
	cin >> r;
	
	h = r*r;
	H = h * 3.14159265358979323846;
	m = 2 * r;
	M = m * 3.14159265358979323846;
	cout << fixed;
	cout <<setprecision(6)<< H << " " << M << " " << endl;


	return 0;
}







Compiler output:
a.cc:2:10: fatal error: stdafx.h: No such file or directory
    2 | #include "stdafx.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#define _USE_MATH_DEFINES
#include "stdafx.h"
#include<iostream>

#include<iomanip>
#include<cmath>



using namespace std;


int main(void)
{
	double r, h, H, m, M;
	cin >> r;
	
	h = r*r;
	H = h * 3.14159265358979323846;
	m = 2 * r;
	M = m * 3.14159265358979323846;
	cout << fixed;
	cout <<setprecision(6)<< H << " " << M << " " << endl;


	return 0;
}







Compiler output:
a.cc:2:10: fatal error: stdafx.h: No such file or directory
    2 | #include "stdafx.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#define _USE_MATH_DEFINES
#include "stdafx.h"
#include<iostream>

#include<iomanip>
#include<cmath>



using namespace std;


int main(void)
{
	double r, h, H, m, M;
	cin >> r;
	
	h = r*r;
	H = h * 3.141592653589;
	m = 2 * r;
	M = m * 3.141592653589;
	cout << fixed;
	cout <<setprecision(6)<< H << " " << M << " " << endl;


	return 0;
}







Compiler output:
a.cc:2:10: fatal error: stdafx.h: No such file or directory
    2 | #include "stdafx.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
using namespace std;

int main() {
	double r, area, circ;
	double pi = 3.141592653589;
	scanf("%lf", &r);
	area = pa*r*r;
	circ = 2*pai*r;
	printf("%f %f\n", are, circ);
	
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: 'pa' was not declared in this scope; did you mean 'pi'?
    8 |         area = pa*r*r;
      |                ^~
      |                pi
a.cc:9:18: error: 'pai' was not declared in this scope; did you mean 'pi'?
    9 |         circ = 2*pai*r;
      |                  ^~~
      |                  pi
a.cc:10:27: error: 'are' was not declared in this scope; did you mean 'area'?
   10 |         printf("%f %f\n", are, circ);
      |                           ^~~
      |                           area
Language: C++

# include <iostream>
# include <stdint.h>
# include <stdio.h>
# include <math.h>
using namespace std;


int main(){
	const int pi =3.14926535;
	 
	double r a,b; 
	cin >> r;
	a =(double)r *(double)r * (double)pi;
	b =2*(double)r *(double)pi;
	printf("%6lf\n",a ); cout <<" "; printf("%6lf\n",b );
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: expected initializer before 'a'
   11 |         double r a,b;
      |                  ^
a.cc:12:16: error: 'r' was not declared in this scope
   12 |         cin >> r;
      |                ^
a.cc:13:9: error: 'a' was not declared in this scope
   13 |         a =(double)r *(double)r * (double)pi;
      |         ^
a.cc:14:9: error: 'b' was not declared in this scope
   14 |         b =2*(double)r *(double)pi;
      |         ^
Language: C++

# include <iostream>
# include <stdint.h>
# include <stdio.h>
# include <math.h>
using namespace std;


int main(){
	const double pi =3.14926535;
	 
	double r a,b; 
	cin >> r;
	a =r *r * pi;
	b =2*r *pi;
	printf("%6lf\n",a ); cout <<" "; printf("%6lf\n",b );
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: expected initializer before 'a'
   11 |         double r a,b;
      |                  ^
a.cc:12:16: error: 'r' was not declared in this scope
   12 |         cin >> r;
      |                ^
a.cc:13:9: error: 'a' was not declared in this scope
   13 |         a =r *r * pi;
      |         ^
a.cc:14:9: error: 'b' was not declared in this scope
   14 |         b =2*r *pi;
      |         ^
Language: C++


#define _USE_MATH_DEFINES 
#include <algorithm> 
#include <cstdio> 
#include <functional>
#include <iostream>
#include <cstring>
#include <climits> 
#include <cmath>
#include <map>
#include <queue> 
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <time.h> 
#include <vector>
using namespace std; 
typedef long long ll; 
typedef unsigned long long ull; 
typedef pair<int, int> i_i; 
typedef pair<ll, int> ll_i; 
typedef pair<double, int> d_i; 
typedef pair<ll, ll> ll_ll;
typedef pair<double, double> d_d; 
struct edge { int u, v; ll w; }; 
int MOD = 1000000007;
int main() {
	double r; cin >> r;
	printf("%f %f\n", r * r * M_PI, r * M_PI * 2); 



Compiler output:
a.cc: In function 'int main()':
a.cc:30:55: error: expected '}' at end of input
   30 |         printf("%f %f\n", r * r * M_PI, r * M_PI * 2);
      |                                                       ^
a.cc:28:12: note: to match this '{'
   28 | int main() {
      |            ^
Language: C++

#include<iostream>
#include<stdio.h>
#include<cmath>
using namespace std;

int main(){
    double r;
    cin >> r;
    cout << a/b <<  " " << a%b << " ";
    printf("%lf %lf",r*r*M_PI,2*r*M_PI);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: 'a' was not declared in this scope
    9 |     cout << a/b <<  " " << a%b << " ";
      |             ^
a.cc:9:15: error: 'b' was not declared in this scope
    9 |     cout << a/b <<  " " << a%b << " ";
      |               ^
Language: C++

#include<stdio.h>

int main(){

double r,S,L,pi;

pi=3.141592653589

scanf("%lf\n",&r);
S=pi*r*r;
L=2*pi*r;

printf("%lf %lf\n",S,L);

return 0;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:18: error: expected ';' before 'scanf'
    7 | pi=3.141592653589
      |                  ^
      |                  ;
    8 | 
    9 | scanf("%lf\n",&r);
      | ~~~~~
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
double r,p=3.141592653589;
printf(%f %f),r*r*p,2*r*p);
return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:6:8: error: expected primary-expression before '%' token
    6 | printf(%f %f),r*r*p,2*r*p);
      |        ^
a.cc:6:9: error: 'f' was not declared in this scope
    6 | printf(%f %f),r*r*p,2*r*p);
      |         ^
Language: C++

#include<iostream>
using namespace std;
int main(){
	int r;
	cin >> r;
	cout 3.141592653589793238*r*r << 2 * 3.141592653589793238*r<<<<endl;
	getchar();
	getchar();
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:13: error: expected ';' before numeric constant
    6 |         cout 3.141592653589793238*r*r << 2 * 3.141592653589793238*r<<<<endl;
      |             ^~~~~~~~~~~~~~~~~~~~~
      |             ;
Language: C++

#ininclude<iostream>
using namespace std;
int main(){
	int r;
	cin >> r;
	cout << r * r*3.141592653589793238 <<" "<< r * 2 * 3.141592653589793238<<endl;
	return 0;
}


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #ininclude; did you mean #include?
    1 | #ininclude<iostream>
      |  ^~~~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope
    5 |         cin >> r;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #ininclude<iostream>
a.cc:6:9: error: 'cout' was not declared in this scope
    6 |         cout << r * r*3.141592653589793238 <<" "<< r * 2 * 3.141592653589793238<<endl;
      |         ^~~~
a.cc:6:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:6:82: error: 'endl' was not declared in this scope
    6 |         cout << r * r*3.141592653589793238 <<" "<< r * 2 * 3.141592653589793238<<endl;
      |                                                                                  ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #ininclude<iostream>
Language: C++

int main(){
	double r;
	cin >> r;
	cout << r * r*3.141592653589793238 <<" "<< r * 2 * 3.141592653589793238 << endl;
	getchar();
	getchar();
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:9: error: 'cin' was not declared in this scope
    3 |         cin >> r;
      |         ^~~
a.cc:4:9: error: 'cout' was not declared in this scope
    4 |         cout << r * r*3.141592653589793238 <<" "<< r * 2 * 3.141592653589793238 << endl;
      |         ^~~~
a.cc:4:84: error: 'endl' was not declared in this scope
    4 |         cout << r * r*3.141592653589793238 <<" "<< r * 2 * 3.141592653589793238 << endl;
      |                                                                                    ^~~~
a.cc:5:9: error: 'getchar' was not declared in this scope
    5 |         getchar();
      |         ^~~~~~~
a.cc:1:1: note: 'getchar' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | int main(){
Language: C++

#include<iostream>
using namespace std;
int main(){
	double r;
	cin >> r;
	cout << r * r*3.141592653589793238 <<" "<< r * 2 * 3.141592653589793238 << endl;
	return 0;


Compiler output:
a.cc: In function 'int main()':
a.cc:7:18: error: expected '}' at end of input
    7 |         return 0;
      |                  ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include <iostream>
#include<stdio.h>
using namespace std;
int main(){
	int r;
	double r,c;
	cin >> r;
	c = 3.141592653589;
	cout << r*r*c << " " << r * 2 * c;
	printf("%.8lf\n", c);
	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:6:16: error: conflicting declaration 'double r'
    6 |         double r,c;
      |                ^
a.cc:5:13: note: previous declaration as 'int r'
    5 |         int r;
      |             ^