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

#include <iostream>
#include <cmath>


int main(void) {
double r;
cin >> r;

cout << M_PI * r * r  << " " <<  2 * M_PI * r << endl; 

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 | 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:9:1: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 | cout << M_PI * r * r  << " " <<  2 * M_PI * r << endl;
      | ^~~~
      | std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:50: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    9 | cout << M_PI * r * r  << " " <<  2 * M_PI * r << endl;
      |                                                  ^~~~
      |                                                  std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<iostream>
using namespace std;

int main()
{
	double r, R,s;
	scanf("%lf", &r);
	s = r*r*3.141592653589;
	R = r * 2 * 3.141592653589;
	printf("%f %f\n",s R);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:27: error: expected ')' before 'R'
   10 |         printf("%f %f\n",s R);
      |               ~           ^~
      |                           )
Language: C++

#include<iostream>
using namespace std;

int main()
{
	double r, R,s;
	scanf_s("%lf", &r,30);
	s = r*r*3.141592653589;
	R = r * 2 * 3.141592653589;
	printf("%f %f\n",s ,R);
	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("%lf", &r,30);
      |         ^~~~~~~
      |         scanf
Language: C++

#include"stdafx.h"
#include<iostream>
using namespace std;

int main()
{
	double r, R,s;
	scanf_s("%lf", &r,30);
	s = r*r*3.141592653589;
	R = r * 2 * 3.141592653589;
	printf("%f %f\n",s ,R);
	return 0;
}

Compiler output:
a.cc:1:9: fatal error: stdafx.h: No such file or directory
    1 | #include"stdafx.h"
      |         ^~~~~~~~~~
compilation terminated.
Language: C++

// OnlieJudge.cpp : Defines the entry point for the console application.
//
#include"stdafx.h"
#include<iostream>
using namespace std;

int main()
{
	double r, R,s;
	scanf_s("%lf", &r,30);
	s = r*r*3.141592653589;
	R = r * 2 * 3.141592653589;
	printf("%f %f\n",s ,R);
	return 0;
}

Compiler output:
a.cc:3:9: fatal error: stdafx.h: No such file or directory
    3 | #include"stdafx.h"
      |         ^~~~~~~~~~
compilation terminated.
Language: C++

#define _USE_MATH_DEFINES
#include <iostream.h>
#include <iomanip.h>
#include <cmath.h>
using namespace std;

int main()
{
	float r;
	
	cin >> r;

	cout << fixed << setprecision(5) <<  M_PI * r * r << " " << 2 * M_PI * r << endl;

	return 0;
}

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

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

int main(){
  int r;
  cin >> r;
  cout << fixed << setprecision(6) << 3.14*r*r << " " << 2*3.14*r << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:20: error: 'setprecision' was not declared in this scope
    8 |   cout << fixed << setprecision(6) << 3.14*r*r << " " << 2*3.14*r << endl;
      |                    ^~~~~~~~~~~~
a.cc:3:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    2 | #include <algorithm>
  +++ |+#include <iomanip>
    3 | using namespace std;
Language: C++

using System;

class P
{
public static void Main()
{
            //????????????????????????
            double r = Double.Parse(Console.ReadLine());

            //?????¨???
            double pi = 3.15169265359;
            //??¢???
            double S = pi * r * r;
            //?????¨
            double L = 2 * pi * r;

            //??¨???
            Console.WriteLine("{0:f5} {1:f5}", S, L);
}
}

Compiler output:
a.cc:1:7: error: expected nested-name-specifier before 'System'
    1 | using System;
      |       ^~~~~~
a.cc:5:7: error: expected ':' before 'static'
    5 | public static void Main()
      |       ^~~~~~~
      |       :
a.cc:20:2: error: expected ';' after class definition
   20 | }
      |  ^
      |  ;
a.cc: In static member function 'static void P::Main()':
a.cc:8:24: error: 'Double' was not declared in this scope; did you mean 'double'?
    8 |             double r = Double.Parse(Console.ReadLine());
      |                        ^~~~~~
      |                        double
a.cc:8:37: error: 'Console' was not declared in this scope
    8 |             double r = Double.Parse(Console.ReadLine());
      |                                     ^~~~~~~
Language: C++

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    int r;

    cin >> r;
    
    cout << (r*r*M_PI) << " " << (2*r*M) << endl;
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:39: error: 'M' was not declared in this scope
   12 |     cout << (r*r*M_PI) << " " << (2*r*M) << endl;
      |                                       ^
Language: C++

#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main()
{
    
    cin >> r;

    cout << fixed << setprecision(8) <<(M_PI*r*r) << " " 
         << fixed << setprecision(8) << (M_PI*2*r) << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:12: error: 'r' was not declared in this scope
   10 |     cin >> r;
      |            ^
Language: C++

#include<iostream>
#include<cstdio>

int main(){
int r
double pi=3.14159265;
cin >> r;

printf("%f %f",r*r*pi,2.0*pi*r);

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:1: error: expected initializer before 'double'
    6 | double pi=3.14159265;
      | ^~~~~~
a.cc:7:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 | 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:7:8: error: 'r' was not declared in this scope
    7 | cin >> r;
      |        ^
a.cc:9:20: error: 'pi' was not declared in this scope
    9 | printf("%f %f",r*r*pi,2.0*pi*r);
      |                    ^~
Language: C++

#include<iostream>
#include<cstdio>

int main(){
int r;
double pi=3.14159265;
cin >> r;

printf("%f %f",r*r*pi,2.0*pi*r);

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 | 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
      |                  ^~~
Language: C++

#include<iostream>
#include<cstdio>

int main(){
double r;
double pi=3.14159265;
cin >> r;

printf("%lf %lf",r*r*pi,2.0*pi*r);

return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 | 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
      |                  ^~~
Language: C++

#include<iostream>
#include<cstdio>
use spacename std;

int main(){
double r;
double pi=3.14159265;
cin >> r;

printf("%f %f",r*r*pi,2.0*pi*r);

return 0;
}

Compiler output:
a.cc:3:1: error: 'use' does not name a type
    3 | use spacename std;
      | ^~~
a.cc: In function 'int main()':
a.cc:8:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    8 | 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
      |                  ^~~
Language: C++

#include<iostream>
#include<cmath>//??°?????¢??°
using namespace std;
int main(){
	double r,z;
	cin>>r;
	z=PI;
	cout<<r*r*z<<" "<<2.0*r*z<<endl;
	return 0;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:7:11: error: 'PI' was not declared in this scope
    7 |         z=PI;
      |           ^~
Language: C++

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

int main(){
  const double pi = 3.14159265;
  int x;
  double y, z;
  cin >> x;
  y = double(x) * double(x) * pi;
  z = double(x) * 2 * pi;
  printf(%lf %lf, y, z);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:10: error: expected primary-expression before '%' token
   12 |   printf(%lf %lf, y, z);
      |          ^
a.cc:12:11: error: 'lf' was not declared in this scope
   12 |   printf(%lf %lf, y, z);
      |           ^~
Language: C++

#include <iostream>
#define _USE_MATH_DEFINES
#include <math.h>
using namespace std;

int main()
{
	double r;
	cin >> r;
	double S = M_PI * r * r;
	double l = 2 * M_PI * r;
	cout << fixed
         << setprecision(5) 
		 << S 
		 << " " 
		 << l 
		 << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:13: error: 'setprecision' was not declared in this scope
   13 |          << setprecision(5)
      |             ^~~~~~~~~~~~
a.cc:4:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    3 | #include <math.h>
  +++ |+#include <iomanip>
    4 | using namespace std;
Language: C++

#include <iostream>
#define _USE_MATH_DEFINES
#include <math.h>
using namespace std;

int main()
{
	double r;
	cin >> r;
	double S = M_PI * r * r;
	double l = 2 * M_PI * r;
	cout << fixed
         << setprecision(7) 
		 << S 
		 << " " 
		 << l 
		 << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:13: error: 'setprecision' was not declared in this scope
   13 |          << setprecision(7)
      |             ^~~~~~~~~~~~
a.cc:4:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    3 | #include <math.h>
  +++ |+#include <iomanip>
    4 | using namespace std;
Language: C++

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

int main()
{
	double r;
	cin >> r;
	double S = M_PI * r * r;
	double l = 2 * M_PI * r;
	cout << fixed
         << setprecision(7) 
		 << S 
		 << " " 
		 << l 
		 << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:13: error: 'setprecision' was not declared in this scope
   12 |          << setprecision(7)
      |             ^~~~~~~~~~~~
a.cc:3:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    2 | #include <math.h>
  +++ |+#include <iomanip>
    3 | using namespace std;
Language: C++

main(){double r;scanf("%f",&r);printf("%d %d",2.0*3.141592653589*r,r*r*3.141592653589);}

Compiler output:
a.cc:1:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    1 | main(){double r;scanf("%f",&r);printf("%d %d",2.0*3.141592653589*r,r*r*3.141592653589);}
      | ^~~~
a.cc: In function 'int main()':
a.cc:1:17: error: 'scanf' was not declared in this scope
    1 | main(){double r;scanf("%f",&r);printf("%d %d",2.0*3.141592653589*r,r*r*3.141592653589);}
      |                 ^~~~~
a.cc:1:32: error: 'printf' was not declared in this scope
    1 | main(){double r;scanf("%f",&r);printf("%d %d",2.0*3.141592653589*r,r*r*3.141592653589);}
      |                                ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | main(){double r;scanf("%f",&r);printf("%d %d",2.0*3.141592653589*r,r*r*3.141592653589);}
Language: C++

import java.util.Scanner;

class Main{
     public static void main(String[] args){

        Scanner as = new Scanner(System.in);
       
        double r,s,t;

       
           
        r = as.nextDouble();
           
           
        s=3.141592653589*r*r;
        t=2.0*3.141592653589*r;

        System.out.println(s+" "+t);           

           
 }
 
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.Scanner;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:4:12: error: expected ':' before 'static'
    4 |      public static void main(String[] args){
      |            ^~~~~~~
      |            :
a.cc:4:30: error: 'String' has not been declared
    4 |      public static void main(String[] args){
      |                              ^~~~~~
a.cc:4:39: error: expected ',' or '...' before 'args'
    4 |      public static void main(String[] args){
      |                                       ^~~~
a.cc:23:2: error: expected ';' after class definition
   23 | }
      |  ^
      |  ;
a.cc: In static member function 'static void Main::main(int*)':
a.cc:6:9: error: 'Scanner' was not declared in this scope
    6 |         Scanner as = new Scanner(System.in);
      |         ^~~~~~~
a.cc:12:13: error: 'as' was not declared in this scope; did you mean 's'?
   12 |         r = as.nextDouble();
      |             ^~
      |             s
a.cc:18:9: error: 'System' was not declared in this scope
   18 |         System.out.println(s+" "+t);
      |         ^~~~~~
a.cc:18:29: error: invalid operands of types 'double' and 'const char [2]' to binary 'operator+'
   18 |         System.out.println(s+" "+t);
      |                            ~^~~~
      |                            | |
      |                            | const char [2]
      |                            double
Language: C++

import java.util.Scanner;

class Main{
   public static void main(String[] args){
      Scanner scan = new Scanner(System.in);
      double r = scan.nextDouble();
    	
      System.out.println(r*r*3.14 + " " + 2*r*3.14);
    	
    }
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.Scanner;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:4:10: error: expected ':' before 'static'
    4 |    public static void main(String[] args){
      |          ^~~~~~~
      |          :
a.cc:4:28: error: 'String' has not been declared
    4 |    public static void main(String[] args){
      |                            ^~~~~~
a.cc:4:37: error: expected ',' or '...' before 'args'
    4 |    public static void main(String[] args){
      |                                     ^~~~
a.cc:11:2: error: expected ';' after class definition
   11 | }
      |  ^
      |  ;
a.cc: In static member function 'static void Main::main(int*)':
a.cc:5:7: error: 'Scanner' was not declared in this scope
    5 |       Scanner scan = new Scanner(System.in);
      |       ^~~~~~~
a.cc:6:18: error: 'scan' was not declared in this scope
    6 |       double r = scan.nextDouble();
      |                  ^~~~
a.cc:8:7: error: 'System' was not declared in this scope
    8 |       System.out.println(r*r*3.14 + " " + 2*r*3.14);
      |       ^~~~~~
a.cc:8:35: error: invalid operands of types 'double' and 'const char [2]' to binary 'operator+'
    8 |       System.out.println(r*r*3.14 + " " + 2*r*3.14);
      |                          ~~~~~~~~ ^ ~~~
      |                             |       |
      |                             double  const char [2]
Language: C++

#include <iostream>
#include <math.h>
using namespace std;
int main()
{
  float a;
  cin>>a;
  cout<<fixed<<setprecision(6)<<a*a*M_PI<<" "<<fixed<<setprecision(6)<<2*a*M_PI<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: 'setprecision' was not declared in this scope
    8 |   cout<<fixed<<setprecision(6)<<a*a*M_PI<<" "<<fixed<<setprecision(6)<<2*a*M_PI<<endl;
      |                ^~~~~~~~~~~~
a.cc:3:1: note: 'std::setprecision' is defined in header '<iomanip>'; this is probably fixable by adding '#include <iomanip>'
    2 | #include <math.h>
  +++ |+#include <iomanip>
    3 | using namespace std;
Language: C++

#include <iostream>
using namespace std;
int main()
{
  float a;
  cin>>a;
  cout<<<< fixed << setprecision(6)<<a*a*3.141592653589<<" "<<<< fixed << setprecision(6)<<2*a*3.141592653589<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: expected primary-expression before '<<' token
    7 |   cout<<<< fixed << setprecision(6)<<a*a*3.141592653589<<" "<<<< fixed << setprecision(6)<<2*a*3.141592653589<<endl;
      |         ^~
a.cc:7:21: error: 'setprecision' was not declared in this scope
    7 |   cout<<<< fixed << setprecision(6)<<a*a*3.141592653589<<" "<<<< fixed << setprecision(6)<<2*a*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;
a.cc:7:63: error: expected primary-expression before '<<' token
    7 |   cout<<<< fixed << setprecision(6)<<a*a*3.141592653589<<" "<<<< fixed << setprecision(6)<<2*a*3.141592653589<<endl;
      |                                                               ^~
Language: C++

#include <iostream>
using namespace std;
int main()
{
  float a;
  cin>>a;
  cout<< fixed << setprecision(2)<<a*a*3.141592653589<<" "<< fixed << setprecision(6)<<2*a*3.141592653589<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:19: error: 'setprecision' was not declared in this scope
    7 |   cout<< fixed << setprecision(2)<<a*a*3.141592653589<<" "<< fixed << setprecision(6)<<2*a*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;
typedef long long ll;
#define EACH(i,a) for (auto& i : a)
#define FOR(i,a,b) for (ll i=(a);i<(b);i++)
#define RFOR(i,a,b) for (ll i=(b)-1;i>=(a);i--)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) RFOR(i,0,n)
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v) {
REP(i,v.size()){if(i)os<<" ";os<<v[i];}return os;}
template<typename T> ostream& operator<<(ostream& os, const vector<vector<T>>& v) {
REP(i,v.size()){if(i)os<<endl;os<<v[i];}return os;}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    // ?????????????????°??????????????????
    // ?????°?????§?????????????????????
    double r;
    cin >> r;
    // ??????????????°???10?????§????????????
    cout << fixed << setprecision(10);
    // ??¢???????±???????????????????
    cout << r * r * pi << " " << 2*pi*r << endl;
    // ???????????§
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:21: error: 'pi' was not declared in this scope
   24 |     cout << r * r * pi << " " << 2*pi*r << endl;
      |                     ^~
Language: C++

import math

r = int(input())

s = r*r*math.pi()
l = 2*r*math.pi()

print(str(s) + " " + str(l))

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import math
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
??
int main(){
????????double r;
????????double s, v;
????????const static double pi = 4*atan(1.0);
??
????????cin >> r;
??
????????s = 2.0 * pi * r;
????????v = 0.5 * s * r;
??
????????printf("%.6f %.6f", v, s);
??
????????return(0);
}

Compiler output:
a.cc:5:1: error: expected unqualified-id before '?' token
    5 | ??
      | ^
Language: C++

#include<iostream>
#include<iomanip>
using namespace std;
int main()
{
int x;
double r=0,t=0;
cin>>x;
r = 2 * x * 3.14;
t = x * x * 3.14;
cout<<setprecition(5)<<fixed<<r<<" "<<setprecition(5)<<fixed<<t<<endl;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:7: error: 'setprecition' was not declared in this scope
   11 | cout<<setprecition(5)<<fixed<<r<<" "<<setprecition(5)<<fixed<<t<<endl;
      |       ^~~~~~~~~~~~
Language: C++

#include <iostream>
#include <iomanip>
using namespace std;
 
int main()
{
    double x;
    double pi = 3,14159265358979;
    cin >> x;
    double z = x*pi*2;
    cout << fixed << setprecision(6) << z*x / 2 << " " << z;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:19: error: expected unqualified-id before numeric constant
    8 |     double pi = 3,14159265358979;
      |                   ^~~~~~~~~~~~~~
Language: C++

#include <iostream>
#include <iomanip>
using namespace std;
 
int main()
{
    double x;
    double pi = 3,14159265358979;
    cin >> x;
    double z = x*pi;
    cout << fixed << setprecision(6) << z*x  << " " << z*2<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:19: error: expected unqualified-id before numeric constant
    8 |     double pi = 3,14159265358979;
      |                   ^~~~~~~~~~~~~~
Language: C++

#include <iostream>
#include <iomanip>
#define pi 3,14159265358979
using namespace std;
 
int main()
{
    double x;

    cin >> x;
    double z = x*pi;
    cout << fixed << setprecision(6) << z*x  << " " << z*2<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:14: error: expected unqualified-id before numeric constant
    3 | #define pi 3,14159265358979
      |              ^~~~~~~~~~~~~~
a.cc:11:18: note: in expansion of macro 'pi'
   11 |     double z = x*pi;
      |                  ^~
Language: C++

#include<iostream>
using namespace std;
int main()
{
 int x;
 double pi=3,14159265358979;
 cin >> x;
 cout <<(double)(2 * x * pi) <<(double)(x * x * pi) << endl;
 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:14: error: expected unqualified-id before numeric constant
    6 |  double pi=3,14159265358979;
      |              ^~~~~~~~~~~~~~
Language: C++

#include<iostream>
using namespace std;
#define pi=3,14159265358979
int main()
{
 int x;
 cin >> x;
 cout <<(double)(x * x * pi) <<(double)(2 * x * pi) << endl;
 return 0;
}

Compiler output:
a.cc:3:9: warning: ISO C++11 requires whitespace after the macro name
    3 | #define pi=3,14159265358979
      |         ^~
a.cc: In function 'int main()':
a.cc:3:11: error: expected primary-expression before '=' token
    3 | #define pi=3,14159265358979
      |           ^
a.cc:8:26: note: in expansion of macro 'pi'
    8 |  cout <<(double)(x * x * pi) <<(double)(2 * x * pi) << endl;
      |                          ^~
a.cc:3:11: error: expected primary-expression before '=' token
    3 | #define pi=3,14159265358979
      |           ^
a.cc:8:49: note: in expansion of macro 'pi'
    8 |  cout <<(double)(x * x * pi) <<(double)(2 * x * pi) << endl;
      |                                                 ^~
Language: C++

#include <iostream>
using namespace std;

const double pi = acos(-1.0);

int main()
{
double r;

cin >> r;

cout <<  pi*r*r << 2*pi*r << endl;

return 0;
}

Compiler output:
a.cc:4:19: error: 'acos' was not declared in this scope
    4 | const double pi = acos(-1.0);
      |                   ^~~~
Language: C++

#include <iostream>
using namespace std;

const double pi = acos(-1.0);

int main()
{
double r;

cin >> r;

cout <<  pi*r*r << 2*pi*r << endl;

return 0;

}

Compiler output:
a.cc:4:19: error: 'acos' was not declared in this scope
    4 | const double pi = acos(-1.0);
      |                   ^~~~
Language: C++

#include<iostream>
#include<math.h>
#include<iomanip>
int main(){
double x;
cin>>x;
cout<<2*x*M_PI<<" "<<x*x*M_PI<<enld;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 | cin>>x;
      | ^~~
      | 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: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 | cout<<2*x*M_PI<<" "<<x*x*M_PI<<enld;
      | ^~~~
      | std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:32: error: 'enld' was not declared in this scope
    7 | cout<<2*x*M_PI<<" "<<x*x*M_PI<<enld;
      |                                ^~~~
Language: C++

#include<iostream>
#include<math.h>
#include<iomanip>
int main(){
double x;
cin>>x;
x=1.0000*x;
cout<<2*x*M_PI<<" "<<x*x*M_PI<<enld;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:1: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 | cin>>x;
      | ^~~
      | 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:8:1: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 | cout<<2*x*M_PI<<" "<<x*x*M_PI<<enld;
      | ^~~~
      | std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:8:32: error: 'enld' was not declared in this scope
    8 | cout<<2*x*M_PI<<" "<<x*x*M_PI<<enld;
      |                                ^~~~
Language: C++

#include<iostream>
#include<cstdio>

using namespace std;

int main(){
   double r,s,c;
   scanf("%lf/n",&r);
   s=r*r*M_PI;
   c=2*r*M_PI;
   printf("%lf %lf/n",s ,c);

}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:10: error: 'M_PI' was not declared in this scope
    9 |    s=r*r*M_PI;
      |          ^~~~
Language: C++

#include<iostream>
#include<cstdio>
#include<math>

using namespace std;

int main(){
   double r,s,c;
   scanf("%lf/n",&r);
   s=r*r*M_PI;
   c=2*r*M_PI;
   printf("%lf %lf/n",s ,c);

}

Compiler output:
a.cc:3:9: fatal error: math: No such file or directory
    3 | #include<math>
      |         ^~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<cstdio>

using namespace std;

int main(){
   double r,s,c;
   double M_PI = 3.1415926535
   cin >> r;
   s=r*r*M_PI;
   c=2*r*M_PI;
   printf("%lf %lf\n",s ,c);

}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:4: error: expected ',' or ';' before 'cin'
    9 |    cin >> r;
      |    ^~~
Language: C++


#include <stdio.h>


int main() {
	unsigned long long n;
	double a;
	double S, C;
	double PI = 3.14159265358979323846;
	scanf("%d", &a);
	S = a * a * PI;
	C = a * 2 * PI;
	
	printf("%f %f\n", C, S);

	return 0;
}}

Compiler output:
a.cc:17:2: error: expected declaration before '}' token
   17 | }}
      |  ^
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); i++)
#define shosu(n) setprecision(n)
#define PAI 3.1415926535897932384264338327950288
#define INF 1000000000000000000
using namespace std;
int main() {
  double n;
  cin >> n;
  ans1=n*m*PAI;ans2=n*2*PAI;
  cout << shosu(8) << asn1 << ' ' << ans2 << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:3: error: 'ans1' was not declared in this scope
   10 |   ans1=n*m*PAI;ans2=n*2*PAI;
      |   ^~~~
a.cc:10:10: error: 'm' was not declared in this scope
   10 |   ans1=n*m*PAI;ans2=n*2*PAI;
      |          ^
a.cc:10:16: error: 'ans2' was not declared in this scope
   10 |   ans1=n*m*PAI;ans2=n*2*PAI;
      |                ^~~~
a.cc:11:23: error: 'asn1' was not declared in this scope
   11 |   cout << shosu(8) << asn1 << ' ' << ans2 << endl;
      |                       ^~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); i++)
#define shosu(n) setprecision(n)
#define PAI 3.1415926535897932384264338327950288
#define INF 1000000000000000000
using namespace std;
int main() {
  double n,ans1,ans2;
  cin >> n;
  ans1=n*m*PAI;ans2=n*2*PAI;
  cout << shosu(8) << ans1 << ' ' << ans2 << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:10: error: 'm' was not declared in this scope
   10 |   ans1=n*m*PAI;ans2=n*2*PAI;
      |          ^
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); i++)
#define shosu(n) setprecision(n)
#define PAI 3.1415926535897932384264338327950288
#define INF 1000000000000000000
using namespace std;
int main() {
  double n,ans1,ans2;
  cin >> n;
  ans1=n*n*PAI;ans2=n*2*PAI
  cout << shosu(8) << ans1 << ' ' << ans2 << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: expected ';' before 'cout'
   11 |   cout << shosu(8) << ans1 << ' ' << ans2 << endl;
      |   ^~~~
Language: C++

#include <iostream>

void sort_vars(int* a, int* b)
{
    int c;
    if (*a =< *b) {

    } else {
        c = *a;
        *a = *b;
        *b = c;
        }
    }



int main(void)
{
    while(true) {
        int n,m;
        std::cin >> n >> m;
        if (n == 0 && m == 0) {
            break;
        }

        sort_vars(&n,&m);
        std::cout << n << " " << m << std::endl;
    }
    return 0;
}

Compiler output:
a.cc: In function 'void sort_vars(int*, int*)':
a.cc:6:13: error: expected primary-expression before '<' token
    6 |     if (*a =< *b) {
      |             ^
Language: C++

#include<stdio.h>
int main()
{
double r;
double pi = acos(-1)
scanf("%lf",&r);
printf("%f %f\n",r*r*pi,2*r*pi);
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:13: error: 'acos' was not declared in this scope
    5 | double pi = acos(-1)
      |             ^~~~
Language: C++

#include<stdio.h>
int main()
{
double r;
double pi = acos(-1);
scanf("%lf",&r);
printf("%f %f\n",r*r*pi,2*r*pi);
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:13: error: 'acos' was not declared in this scope
    5 | double pi = acos(-1);
      |             ^~~~
Language: C++

#include<stdio.h>
int main(){
	float r;
	scanf("%f",&r);
	printf("%f %f\n",(double)r*r*3.14159265359,(double)r*2*3.14159265359);
	return 0;
}#include<stdio.h>
int main(){
	float r;
	scanf("%f",&r);
	printf("%f %f\n",(double)r*r*3.141592654,(double)r*2*3.141592654);
	return 0;
}

Compiler output:
a.cc:7:2: error: stray '#' in program
    7 | }#include<stdio.h>
      |  ^
a.cc:7:3: error: 'include' does not name a type
    7 | }#include<stdio.h>
      |   ^~~~~~~
Language: C++

#include<stdio.h>
int main(){
	float r;
	scanf("%f",&r);
	printf("%f %f\n"(double)r*r*3.14159265358979323846264338327950288,(double)r*2*3.14159265358979323846264338327950288);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:26: error: expected primary-expression before 'double'
    5 |         printf("%f %f\n"(double)r*r*3.14159265358979323846264338327950288,(double)r*2*3.14159265358979323846264338327950288);
      |                          ^~~~~~
a.cc:5:32: error: expression cannot be used as a function
    5 |         printf("%f %f\n"(double)r*r*3.14159265358979323846264338327950288,(double)r*2*3.14159265358979323846264338327950288);
      |                                ^
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:38: error: 'M_PT' was not declared in this scope; did you mean 'M_PI'?
    6 |         printf("%f %f\n",(double)r*r*M_PT,(double)r*2*M_PT);
      |                                      ^~~~
      |                                      M_PI
Language: C++

import java.io.IOException;
import java.util.Scanner;

public class Main{
	public static void main(String[] args) throws IOException{
	Scanner sc = new Scanner(System.in);
	double r;
	double cir,area;

	r = Double.parseDouble(sc.next());
	cir = 2*Math.PI*r;
	area = Math.PI*r*r;

	System.out.printf("%.6f %.6f", area,cir);
	sc.close();
	}
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.io.IOException;
      | ^~~~~~
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:4:1: error: expected unqualified-id before 'public'
    4 | public class Main{
      | ^~~~~~
Language: C++

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

int main(){
 double PI = 3.141592653589;
 double r;
 cin >> r;

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

 return 0;
}

Compiler output:
a.cc:2:9: fatal error: cstudio: No such file or directory
    2 | #include<cstudio>
      |         ^~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
#define ll long long int
#define FOR(i,a,b) for(ll i=(ll)(a);i<(ll)(b);i++)
#define REP(i,n) FOR(i,0,n)
#define REP1(i,n) FOR(i,1,n)
using namespace std;

int main()
{
	double r,s,l;
	cin >> r;
	s = r*r*M_PI;
	l = 2*r*M_PI;
	cout << fixd << s << " " << fixed << l << "\n";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: 'fixd' was not declared in this scope
   14 |         cout << fixd << s << " " << fixed << l << "\n";
      |                 ^~~~
Language: C++

#include<bits/stdc++.h>
#define ll long long int
#define FOR(i,a,b) for(ll i=(ll)(a);i<(ll)(b);i++)
#define REP(i,n) FOR(i,0,n)
#define REP1(i,n) FOR(i,1,n)
using namespace std;

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

Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: 'fixd' was not declared in this scope
   14 |         cout << fixd << s << " " << l << "\n";
      |                 ^~~~
Language: C++

#include<bits/stdc++.h>
#include<math.h>
#define ll long long int
#define FOR(i,a,b) for(ll i=(ll)(a);i<(ll)(b);i++)
#define REP(i,n) FOR(i,0,n)
#define REP1(i,n) FOR(i,1,n)
using namespace std;

int main()
{
	double r,s,l;
	cin >> r;
	s = r*r*M_PI;
	l = 2*r*M_PI;
	cout << fixd << s << " " << fixed << l << "\n";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:17: error: 'fixd' was not declared in this scope
   15 |         cout << fixd << s << " " << fixed << l << "\n";
      |                 ^~~~
Language: C++

#include <iostream>
using namespace std;

int main()
{
 double r,x,y;

 cin >> r;

 x == 3.14159*(r*r);
 y == 3.14195*r

 cout << x << y << endl;
 
 return 0;
}

 

 

Compiler output:
a.cc: In function 'int main()':
a.cc:11:16: error: expected ';' before 'cout'
   11 |  y == 3.14195*r
      |                ^
      |                ;
   12 | 
   13 |  cout << x << y << endl;
      |  ~~~~
Language: C++

#define _USE_MATH_DEFINES
#include<iostream>
#include<iomanip>
#include <math.h>

int main(){
  double r;
  std::cin >> r;
  std::cout << std::setprecision(6) << set::fixed << r*r*M_PI  << 2*r*M_PI << std::endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:40: error: 'set' has not been declared
    9 |   std::cout << std::setprecision(6) << set::fixed << r*r*M_PI  << 2*r*M_PI << std::endl;
      |                                        ^~~
Language: C++

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

int main(){
	int r;
	double S,L;
	cin>>r;
	S=r*r*M_PI;
	L=2*r*M_PI;
	cout<<fixed<<setprecision(5)<<S<<" "<<fixed<<setprecision(5)<<L<<endl;
	return 0;
}

Compiler output:
a.cc:3:9: fatal error: math: No such file or directory
    3 | #include<math>
      |         ^~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int maim(){
double f;
cin>>f;
cout<<f*f*3.141592653589<<2*f*3.141592653589<<endl;
}

Compiler output:
a.cc: In function 'int maim()':
a.cc:8:1: warning: no return statement in function returning non-void [-Wreturn-type]
    8 | }
      | ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
double f;
cin>>f;
printf("%.6lf %.6lf",f*f*3.141592,2*f*3.141592)
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:48: error: expected ';' before 'return'
    7 | printf("%.6lf %.6lf",f*f*3.141592,2*f*3.141592)
      |                                                ^
      |                                                ;
    8 | return 0;
      | ~~~~~~
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
	long float r;
	cin >> r;
	printf("%.8lf", (double)r*(double)r*3.1415926535);
	cout << " ";
	printf("%.8lf", (double)r * 2 * 3.1415926535);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'long' specified with 'float'
    5 |         long float r;
      |         ^~~~
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
	long float r;
	cin >> r;
	printf("%.6lf", (double)r*(double)r*3.1415926535);
	cout << " ";
	printf("%.6lf", (double)r * 2 * 3.1415926535);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'long' specified with 'float'
    5 |         long float r;
      |         ^~~~
Language: C++

#define _USE_MATH_DEFINES
#include<iostream>
#include<stdio.h>
#include<math.h>
using namespace std;
int main(){
	long float r;
	cin >> r;
	printf("%.20lf", (double)r*(double)r*M_PI);
	cout << " ";
	printf("%.7lf", (double)r * 2 *M_PI);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'long' specified with 'float'
    7 |         long float r;
      |         ^~~~
Language: C++

#define _USE_MATH_DEFINES
#include<iostream>
#include<stdio.h>
#include<math.h>
using namespace std;
int main(){
	long float r;
	cin >> r;
	printf("%.6lf", (double)r*(double)r*M_PI);
	cout << " ";
	printf("%.6lf", (double)r * 2 *M_PI);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: 'long' specified with 'float'
    7 |         long float r;
      |         ^~~~
Language: C++

#include<iostream>
#include<stdio.h>
#include<math.h>
using namespace std;
int main(){
	long float r;
	cin >> r;
	printf("%.6lf", (double)r*(double)r*3.141592653589);
	cout << " ";
	printf("%.6lf", (double)r * 2 *3.141592653589);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'long' specified with 'float'
    6 |         long float r;
      |         ^~~~
Language: C++

#include<iostream>
#include<stdio.h>
using namespace std;
int main(){
	long float r;
	cin >> r;
	printf("%.6lf", (double)r*(double)r*3.141592653589);
	cout << " ";
	printf("%.6lf", (double)r * 2 *3.141592653589);

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'long' specified with 'float'
    5 |         long float r;
      |         ^~~~
Language: C++

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

int main(void)
{		
	int r;
	cin >> r;
	
	double area = r * r * pi;
	double leng = r * 2 * pi;
	
	cout << area << " " << leng << endl;
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:31: error: 'pi' was not declared in this scope
   11 |         double area = r * r * pi;
      |                               ^~
Language: C++

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

int main(void)
{		
	int r;
	cin >> r;
	
	double area = r * r * pi;
	double leng = r * 2 * pi;
	
	cout << area << " " << leng << endl;
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:31: error: 'pi' was not declared in this scope
   11 |         double area = r * r * pi;
      |                               ^~
Language: C++

#include <stdio.h>
??????????
int main(void){
????????float r;
????????scanf("%f",&r);
????????printf("%f %f\n",3.141592*r*r,3.141592*r*2);
????????return 0;
}

Compiler output:
a.cc:2:1: error: expected unqualified-id before '?' token
    2 | ??????????
      | ^
Language: C++

#include <stdio.h>
 
int main(void)
{
  double r,are,circ;
 
  scanf("%lf", &r);
  are=r*2*3.141592653589;
  circ=r*r*3.141592653589
      printf("%f %f",are,circ);
 
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:26: error: expected ';' before 'printf'
    9 |   circ=r*r*3.141592653589
      |                          ^
      |                          ;
   10 |       printf("%f %f",are,circ);
      |       ~~~~~~
Language: C++

#define _USE_MATH_DEFINES // for C++  
#include <cmath>  
#include <iostream>
#include <cstdio>
using namespace std;
int main(void){
    int r;
    cin >> r;
//??¢?????¨?????¨?????????????????????????????§????????£????????????????????????????????????????????????????°???°?????°??¨??????0.00001 ??\???????????????????????§?????????????????¨????????????
    printf("%.5f %.5f",???* r * M_PI, (r*2)*M_PI;
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:24: error: expected primary-expression before '?' token
   10 |     printf("%.5f %.5f",???* r * M_PI, (r*2)*M_PI;
      |                        ^
a.cc:10:25: error: expected primary-expression before '?' token
   10 |     printf("%.5f %.5f",???* r * M_PI, (r*2)*M_PI;
      |                         ^
a.cc:10:26: error: expected primary-expression before '?' token
   10 |     printf("%.5f %.5f",???* r * M_PI, (r*2)*M_PI;
      |                          ^
a.cc:10:27: error: invalid type argument of unary '*' (have 'int')
   10 |     printf("%.5f %.5f",???* r * M_PI, (r*2)*M_PI;
      |                           ^~~
a.cc:10:49: error: expected ':' before ';' token
   10 |     printf("%.5f %.5f",???* r * M_PI, (r*2)*M_PI;
      |                                                 ^
a.cc:10:49: error: expected primary-expression before ';' token
a.cc:10:49: error: expected ':' before ';' token
a.cc:10:49: error: expected primary-expression before ';' token
a.cc:10:49: error: expected ':' before ';' token
a.cc:10:49: error: expected primary-expression before ';' token
Language: C++

import java.util.Scanner;
public class Main {
    public static void main(String[] args){
       Scanner scan = new java.util.Scanner(System.in);
       double r = scan.nextInt();
       double S = r * r * Math.PI;
       double d = 2 * r * Math.PI;
       System.out.println(String.format("%.6f", S) + " " + String.format("%.6f", d));
    }
}

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

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:1: error: expected ',' or ';' before 'scanf'
    6 | scanf("%d", &r);
      | ^~~~~
a.cc:7:15: error: expected ';' before 'l'
    7 | s = pi * r * r
      |               ^
      |               ;
    8 | l = 2 * pi * r
      | ~              
a.cc:10:9: error: expected ';' before '}' token
   10 | return 0
      |         ^
      |         ;
   11 | }
      | ~
Language: C++

#include<stdio.h>
int main()
{
 int r;
 double b,c,d
 
 scanf("%d",&r)
 b=3,141592653;
 c=(double)r*r*b/2;
 d=(double)2*r*b;
 
 printf("%f %f\n",c,d)

 return 0
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:2: error: expected initializer before 'scanf'
    7 |  scanf("%d",&r)
      |  ^~~~~
a.cc:10:2: error: 'd' was not declared in this scope
   10 |  d=(double)2*r*b;
      |  ^
Language: C++

#include<stdio.h>
int main()
{
 int r;
 double b,c,d
 
 scanf("%d",&r)
 b=3,141592653;
 c=(double)r*r*b/2;
 d=(double)2*r*b;
 printf("%f %f\n",c,d)

 return 0
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:2: error: expected initializer before 'scanf'
    7 |  scanf("%d",&r)
      |  ^~~~~
a.cc:10:2: error: 'd' was not declared in this scope
   10 |  d=(double)2*r*b;
      |  ^
Language: C++

#include<stdio.h>
int main()
{
 int r;
 double b,c,d
 
 scanf("%d",&r)
 b=3,141592653;
 c=(double)r*r*b/2;
 d=(double)2*r*b;
 printf("%f %f\n",c,d);

 return 0;


}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:2: error: expected initializer before 'scanf'
    7 |  scanf("%d",&r)
      |  ^~~~~
a.cc:10:2: error: 'd' was not declared in this scope
   10 |  d=(double)2*r*b;
      |  ^
Language: C++

#include <iostream>

int main()
{
  double r ;
  std::cin >> r ;

  double n_pi = 3.141592653589 ;

  std::fixed ;
  std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:21: error: 'precision' is not a member of 'std'
   11 |   std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;
      |                     ^~~~~~~~~
Language: C++

#include <iostream>

int main()
{
  double r ;
  std::cin >> r ;

  double n_pi = 3.141592653589 ;

  std::fixed ;
  std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;

  return 0 ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:21: error: 'precision' is not a member of 'std'
   11 |   std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;
      |                     ^~~~~~~~~
Language: C++

#include <iostream>

int main()
{
  double r ;
  std::cin >> r ;

  double n_pi = 3.141592653589 ;

  std::cout << std::fixed ;
  std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;

  return 0 ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:21: error: 'precision' is not a member of 'std'
   11 |   std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;
      |                     ^~~~~~~~~
Language: C++

#include <iostream>

int main()
{
  double r ;
  std::cin >> r ;

  double n_pi = 3.141592653589 ;

  std::cout << std::fixed() ;
  std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;

  return 0 ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:26: error: too few arguments to function 'std::ios_base& std::fixed(ios_base&)'
   10 |   std::cout << std::fixed() ;
      |                ~~~~~~~~~~^~
In file included from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/ios_base.h:1104:3: note: declared here
 1104 |   fixed(ios_base& __base)
      |   ^~~~~
a.cc:11:21: error: 'precision' is not a member of 'std'
   11 |   std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;
      |                     ^~~~~~~~~
Language: C++

#include <iostream>
#include <iomanip>

int main()
{
  double r ;
  std::cin >> r ;

  double n_pi = 3.141592653589 ;

  std::cout << std::fixed ;
  std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;

  return 0 ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:21: error: 'precision' is not a member of 'std'; did you mean 'setprecision'?
   12 |   std::cout << std::precision( 5 ) << r * r * n_pi << " " << 2.0 * r * n_pi << std::endl ;
      |                     ^~~~~~~~~
      |                     setprecision
Language: C++

#include <iostream>
#include <stdio.h>
using namespace std;
int main(void){
    double r,py;
    cin >> r;
    py=3.14159265358979;
    printf("%f %f\n",2*py*r,py*r*r);

Compiler output:
a.cc: In function 'int main()':
a.cc:8:37: error: expected '}' at end of input
    8 |     printf("%f %f\n",2*py*r,py*r*r);
      |                                     ^
a.cc:4:15: note: to match this '{'
    4 | int main(void){
      |               ^