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

#define _USE_MATH_DEFINES
#define __STDC_WANT_LIB_EXT1__ 1
#include <stdio.h>
#include <math.h>

void CountCircumReference()
{
	long double circleRadius, circumReference;
	while (1)
	{
		printf_s("Enter the radius of the cirlce \n");
		scanf("%Lf", &circleRadius);
		if (circleRadius <= 100 && circleRadius >= 1)
		{
			break;
		}
		printf_s("Wrong input \n");
	}
 
	circumReference = 2 * M_PI * circleRadius;
	printf_s("%Lf \n", circumReference);
 
	return;
}
 
int main(int argc, const char* argv[])
{
	CountCircumReference();
 
	return 0;
}
#define _USE_MATH_DEFINES
#include <stdio.h>
#include <math.h>

//#define M_PI 3.141592653589

void CountCircumReference()
{
	long double circleRadius, circumReference;
	while (1)
	{
		printf_s("Enter the radius of the cirlce \n");
		scanf("%Lf", &circleRadius);
		if (circleRadius <= 100 && circleRadius >= 1)
		{
			break;
		}
		printf_s("Wrong input \n");
	}

	circumReference = 2 * M_PI * circleRadius;
	printf_s("%Lf \n", circumReference);

	return;
}

int main(int argc, const char* argv[])
{
	CountCircumReference();

	return 0;
}

Compiler output:
main.c: In function 'CountCircumReference':
main.c:11:17: error: implicit declaration of function 'printf_s'; did you mean 'printf'? [-Wimplicit-function-declaration]
   11 |                 printf_s("Enter the radius of the cirlce \n");
      |                 ^~~~~~~~
      |                 printf
main.c: At top level:
main.c:38:6: error: redefinition of 'CountCircumReference'
   38 | void CountCircumReference()
      |      ^~~~~~~~~~~~~~~~~~~~
main.c:6:6: note: previous definition of 'CountCircumReference' with type 'void()'
    6 | void CountCircumReference()
      |      ^~~~~~~~~~~~~~~~~~~~
main.c:58:5: error: redefinition of 'main'
   58 | int main(int argc, const char* argv[])
      |     ^~~~
main.c:26:5: note: previous definition of 'main' with type 'int(int,  const char **)'
   26 | int main(int argc, const char* argv[])
      |     ^~~~
Language: C

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

//#define M_PI 3.141592653589

void CountCircumReference()
{
	long double circleRadius, circumReference;
	while (1)
	{
		printf_s("Enter the radius of the cirlce \n");
		scanf("%Lf", &circleRadius);
		if (circleRadius <= 100 && circleRadius >= 1)
		{
			break;
		}
		printf_s("Wrong input \n");
	}

	circumReference = 2 * M_PI * circleRadius;
	printf_s("%Lf \n", circumReference);

	return;
}

int main(int argc, const char* argv[])
{
	CountCircumReference();

	return 0;
}


Compiler output:
main.c: In function 'CountCircumReference':
main.c:12:17: error: implicit declaration of function 'printf_s'; did you mean 'printf'? [-Wimplicit-function-declaration]
   12 |                 printf_s("Enter the radius of the cirlce \n");
      |                 ^~~~~~~~
      |                 printf
Language: C++

#include <iostream>
int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    // fixed で指数表示ではなく小数点表示
    // setprecision で精度を指定
    std::cout << std::fixed << std::setprecision(10);
    double r;
    std::cin >> r;
    std::cout << r * 6.28318530717958623200 << std::endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:37: error: 'setprecision' is not a member of 'std'
    7 |     std::cout << std::fixed << std::setprecision(10);
      |                                     ^~~~~~~~~~~~
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 | int main() {
Language: Java

import java.util.Scanner;

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

    Scanner sc = new Scanner(System.in);

    int R = sc.nextInt();
    double D = R * 2;
    System.out.println(D * 3.14);

  }
}

Compiler output:
Main.java:3: error: class CirclePond is public, should be declared in a file named CirclePond.java
public class CirclePond{
       ^
1 error
Language: C++

#include<iosrtream>
using namespace std;
#define pi 3.141592653589793238
int main(){
	
	double r;
	cin>>r;
	double ans = (2* pi * r);
	printf("%0.20lf \n", ans);
//	cout<< setprecision(20) <<ans<<endl;
}

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

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

int main() {
  int R
  cin >> R >> endl;
  cout << R * R * 3.14 << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: expected initializer before 'cin'
    6 |   cin >> R >> endl;
      |   ^~~
a.cc:7:11: error: 'R' was not declared in this scope
    7 |   cout << R * R * 3.14 << endl;
      |           ^
Language: C++

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

const double PI = acos(-1);


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

   double s = 2*PI*r; 

   cout<<setpricision(10)<<s<<endl;

}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:10: error: 'setpricision' was not declared in this scope
   14 |    cout<<setpricision(10)<<s<<endl;
      |          ^~~~~~~~~~~~
Language: C++

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

const double PI = acos(-1);


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

   double s = 2*PI*r; 

   cout<<setprisicion(10)<<s<<endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:10: error: 'setprisicion' was not declared in this scope
   14 |    cout<<setprisicion(10)<<s<<endl;
      |          ^~~~~~~~~~~~
Language: C

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

int main(void){
 	
  	int N;
  	double ans;
  
  	scanf("%d",&N);
  
  	ans = N * 2 * PI;
  
  	printf("%f",ans);
  
  	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:23: error: 'PI' undeclared (first use in this function)
   11 |         ans = N * 2 * PI;
      |                       ^~
main.c:11:23: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
int main(void){
    double r;
    scanf("%d",&r);
    r = r * 2 * 3.141592;
    printf("%lf",r)
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:20: error: expected ';' before 'return'
    6 |     printf("%lf",r)
      |                    ^
      |                    ;
    7 |     return 0;
      |     ~~~~~~
Language: C

#include <stdio.h>
int main(void){
    double r;
    scanf("%d",&r);
    r = r * 2 * 3.141592;
    printf("%d",r)
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:19: error: expected ';' before 'return'
    6 |     printf("%d",r)
      |                   ^
      |                   ;
    7 |     return 0;
      |     ~~~~~~
Language: C

#include <stdio.h>
int main(void){
    int r;
    scanf("%d",&r);
    r = r * 2 * 3.141592;
    printf("%d",r)
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:19: error: expected ';' before 'return'
    6 |     printf("%d",r)
      |                   ^
      |                   ;
    7 |     return 0;
      |     ~~~~~~
Language: C++

int main(){
  int r;
  cin<<r;
  cout<<3.14*r*r;
  return 0;
}
  

Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'cin' was not declared in this scope
    3 |   cin<<r;
      |   ^~~
a.cc:4:3: error: 'cout' was not declared in this scope
    4 |   cout<<3.14*r*r;
      |   ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main()
{
  ll N; cin >> N;
  cout << N * 6.28 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'll' was not declared in this scope
    5 |   ll N; cin >> N;
      |   ^~
a.cc:5:16: error: 'N' was not declared in this scope
    5 |   ll N; cin >> N;
      |                ^
Language: Java


import java.util.Scanner;

public class AtCoder168 {

  
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int R = scanner.nextInt();
        double a = 2*Math.PI*R; 
        System.out.println(a);
    }
    
}


Compiler output:
Main.java:4: error: class AtCoder168 is public, should be declared in a file named AtCoder168.java
public class AtCoder168 {
       ^
1 error
Language: C++

#incldue <iostream>
using namespace std;

int main(void)
{
  int r;
  const double PI = 3.141592653589;
  cin >> r;
  
  cout << (2 * PI * r) << endl;
  
  return 0;
}


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #incldue; did you mean #include?
    1 | #incldue <iostream>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:8:3: error: 'cin' was not declared in this scope
    8 |   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 | #incldue <iostream>
a.cc:10:3: error: 'cout' was not declared in this scope
   10 |   cout << (2 * PI * r) << endl;
      |   ^~~~
a.cc:10:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:10:27: error: 'endl' was not declared in this scope
   10 |   cout << (2 * PI * r) << endl;
      |                           ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #incldue <iostream>
Language: C++

#include<bits/stdc++.h>

typedef long long ll;
using namespace std;

const double PI 3.141592653589
  
int main(){
  ll N; cin >> N;
  cout << double(2*N*PI);
  return 0;
}

Compiler output:
a.cc:6:17: error: expected initializer before numeric constant
    6 | const double PI 3.141592653589
      |                 ^~~~~~~~~~~~~~
Language: C

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

int main() {
  int R;
  cin >> R;
  cout >> 2*3.14*R << endl;
}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main () {
int R ;
  double 3.14 ;
cin>>R;
cout <<R*3.14<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:10: error: expected unqualified-id before numeric constant
    5 |   double 3.14 ;
      |          ^~~~
Language: C++

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

double main() {
  
  double R;
  cin >> R;

  cout << (R + R) * 3.14 << endl;
  return0;
}


Compiler output:
a.cc:4:1: error: '::main' must return 'int'
    4 | double main() {
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:10:3: error: 'return0' was not declared in this scope
   10 |   return0;
      |   ^~~~~~~
Language: Java

import java.util.Scanner;
public class Main{
   public static void main(String[] args){
     Scanner scanner = new Scanner(System.in);
     int R = sc.nextInt();
     System.out.println(2*3.14*R);
   }
}  
  

Compiler output:
Main.java:5: error: cannot find symbol
     int R = sc.nextInt();
             ^
  symbol:   variable sc
  location: class Main
1 error
Language: C++

#include <cstdlib>
#include <iterator>
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cctype>
#include <functional>
#include <cmath>
#include <stack>
#include <bitset>

using namespace std;

#define int long long
#define MAX 1e18

signed main() {
    int r; cin >> r;
    cout << 2 * M_PI * r << endl;

}

Compiler output:
a.cc:12:1: error: stray '\16' in program
   12 | <U+000E>
      | ^~~~~~~~
Language: Java

import java.util.Scanner;

class Main{
 public static void main(String args[]){
   Scanner sc = new Scanner(System.in);
   int R = sc.nextInt();

  
     System.out.println(2*Math.PI*R);
  
   }
 
 }
}

Compiler output:
Main.java:14: error: class, interface, enum, or record expected
}
^
1 error
Language: C++

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

int main(){
  int r;
  cin>>r;
  cout<<2*r*PI;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: 'PI' was not declared in this scope
    8 |   cout<<2*r*PI;
      |             ^~
Language: C++

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

int main(){

    int R;
    cin >> R;

    cout << "2*R*3.1415"
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:25: error: expected ';' before '}' token
    9 |     cout << "2*R*3.1415"
      |                         ^
      |                         ;
   10 | }
      | ~
Language: C++

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

int main() {
  double pi=3.1415926535
  int R;
  cin >> R;
  
  cout << R * pi << endl;
  
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: expected ',' or ';' before 'int'
    6 |   int R;
      |   ^~~
a.cc:7:10: error: 'R' was not declared in this scope
    7 |   cin >> R;
      |          ^
Language: C


#include <stdio.h>
#include <ctype.h>
#include <string.h>


int main() {
	double Pai = 3.141;
	int R;
	scanf_s("%d", &R);
	double a = (double)Pai * R * 2;
	printf("%f", a);
	return 0;

}


Compiler output:
main.c: In function 'main':
main.c:10:9: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
   10 |         scanf_s("%d", &R);
      |         ^~~~~~~
      |         scanf
Language: C

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

int main(){
  double han,ans;
  scanf("%f",han);
  ans=han*pi*2;
  printf("%f",ans);
  return 0;

}


Compiler output:
main.c: In function 'main':
main.c:7:11: error: 'pi' undeclared (first use in this function)
    7 |   ans=han*pi*2;
      |           ^~
main.c:7:11: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int main(){
  int han;
  float ans;
  scanf("%d",han);
  han*3.1415=ans;
  printf("%f",ans);
  return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:13: error: lvalue required as left operand of assignment
    7 |   han*3.1415=ans;
      |             ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int R;
  cin >> R;
  cout << s * R * 3.14
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:11: error: 's' was not declared in this scope
    7 |   cout << s * R * 3.14
      |           ^
Language: C++

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

int R;

int main(){
    cin>>R;
    cout<<(double)2*R*Math.PI<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:23: error: 'Math' was not declared in this scope
    8 |     cout<<(double)2*R*Math.PI<<endl;
      |                       ^~~~
Language: C++

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

int R;

int main(){
    cin>>R;
    cout<<(double)2*R*Math.PI<<ebadl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:23: error: 'Math' was not declared in this scope
    8 |     cout<<(double)2*R*Math.PI<<ebadl;
      |                       ^~~~
a.cc:8:32: error: 'ebadl' was not declared in this scope
    8 |     cout<<(double)2*R*Math.PI<<ebadl;
      |                                ^~~~~
Language: C++

#include<iostream>
#include<math.h>
using namespace std;
#DEFINE PI 3.1415;
int main(){
  int r;
  cin >> r;
  cout << 2*PI*r;
  return 0;
}
  

Compiler output:
a.cc:4:2: error: invalid preprocessing directive #DEFINE
    4 | #DEFINE PI 3.1415;
      |  ^~~~~~
a.cc: In function 'int main()':
a.cc:8:13: error: 'PI' was not declared in this scope
    8 |   cout << 2*PI*r;
      |             ^~
Language: C++

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

int main(){
    int r;
    cin >> r;
    double ans = 2.0*3.14*r
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: expected ',' or ';' before 'cout'
    8 |     cout << ans << endl;
      |     ^~~~
Language: C++

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

int main(){
    int r;
    cin >> r;
    double ans = 2*3.14*r
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:5: error: expected ',' or ';' before 'cout'
    8 |     cout << ans << endl;
      |     ^~~~
Language: C++

#include <stdio.h>
#include <math.h>
#include <iostream>
#include
using namespace std;
int main(void){
  int R;
  scanf("%d",&R);
  printf("%f",2*M_PI*R);
  return 0;
}

Compiler output:
a.cc:4:9: error: #include expects "FILENAME" or <FILENAME>
    4 | #include
      |         ^
Language: C++

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

int main() {
  int R;
  cin >> R;
  double pi = 3.141592
  cout << 2 * R * pi << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: expected ',' or ';' before 'cout'
    8 |   cout << 2 * R * pi << endl;
      |   ^~~~
Language: C++

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

int main() {
  int R;
  cin >> R;
  int pi = 3.141592
  cout << 2 * R * pi << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:3: error: expected ',' or ';' before 'cout'
    8 |   cout << 2 * R * pi << endl;
      |   ^~~~
Language: Java

import java.util.Scanner;
public class scrap1{


    public static void main(String[] args) {


        Scanner reader = new Scanner(System.in);

        int a = reader.nextInt();

            System.out.println(2*Math.PI*a);




    }

}


Compiler output:
Main.java:2: error: class scrap1 is public, should be declared in a file named scrap1.java
public class scrap1{
       ^
1 error
Language: C++

#include <iostream>
#include <numbers>

using namespace std;

int main(){
 int R;
  cin >>R;
  cout << 2*pi*R<<endl;
  return 0;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: 'pi' was not declared in this scope
    9 |   cout << 2*pi*R<<endl;
      |             ^~
Language: Java

import java.util.*;
class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int r = sc.nextInt();
        System.out.pritnln(2*r*3.14);
        }
        }


Compiler output:
Main.java:6: error: cannot find symbol
        System.out.pritnln(2*r*3.14);
                  ^
  symbol:   method pritnln(double)
  location: variable out of type PrintStream
1 error
Language: C

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main() {
  double R;
  cin >> R;
  R = R*2*3.14;
  cout<<R<<endl;

}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
#include <map>

int main(){


  std::cin >> N;
  int n[N];
  int emps[N];

  for(int i=0; i<N; i++){
    std::cin >> emp[N];
  }

  for(int i=0; i<N; i++){
    n[emps[i]]++;
  }

  for(int i=0; i<N; i++){
    std::cout << n[i] << std::endl;
  }


  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:15: error: 'N' was not declared in this scope
    7 |   std::cin >> N;
      |               ^
a.cc:12:17: error: 'emp' was not declared in this scope
   12 |     std::cin >> emp[N];
      |                 ^~~
a.cc:16:5: error: 'n' was not declared in this scope
   16 |     n[emps[i]]++;
      |     ^
a.cc:16:7: error: 'emps' was not declared in this scope
   16 |     n[emps[i]]++;
      |       ^~~~
a.cc:20:18: error: 'n' was not declared in this scope
   20 |     std::cout << n[i] << std::endl;
      |                  ^
Language: C++

#include <iostream>
#include <map>

int main(){
  int N;
  std::cin >> N;
  int n[N];
  int emps[N];

  for(int i=0; i<N; i++){
    n[emps[i]]++;
  }

  for(int i=0; i<N i++){
    std::cout << n[i] << std::endl;
  }


  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:19: error: expected ';' before 'i'
   14 |   for(int i=0; i<N i++){
      |                   ^~
      |                   ;
Language: C++

#include <iostream>
#include <map>

int main(){
  int N;
  std::cin >> N;
  int n[N];
  int emps[N];

  for(int i=0; i<N; i++){
    n[emps[i]]++;
  }

  for(int i=0; i++){
    std::cout << n[i] << std::endl;
  }


  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:19: error: expected ';' before ')' token
   14 |   for(int i=0; i++){
      |                   ^
      |                   ;
Language: C++

#include <iostream>
#include <map>

int main(){
  std::cin >> N;
  int n[N];
  int emps[N];

  for(int i=0; i<N; i++){
    n[emps[i]]++;
  }

  for(int i=0; i++){
    std::cout << n[i] << std::endl;
  }


  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:15: error: 'N' was not declared in this scope
    5 |   std::cin >> N;
      |               ^
a.cc:10:5: error: 'n' was not declared in this scope
   10 |     n[emps[i]]++;
      |     ^
a.cc:10:7: error: 'emps' was not declared in this scope
   10 |     n[emps[i]]++;
      |       ^~~~
a.cc:13:19: error: expected ';' before ')' token
   13 |   for(int i=0; i++){
      |                   ^
      |                   ;
a.cc:14:18: error: 'n' was not declared in this scope
   14 |     std::cout << n[i] << std::endl;
      |                  ^
Language: C++

#include <bits/stdc++>
typedef long long ll;
#define rep(i,n) for(int i=0, i##_end=(n); i<i##_end; i++)
void debug_out() { cout << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
  cout << H << " ";
  debug_out(T...);
}
template<class T>bool updatemMax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool updateMin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
#ifdef _DEBUG
#define debug(...) debug_out(__VA_ARGS__)
#else
#define debug(...) 
#endif
using std::cout ;
using std::endl ;
using std::cin ;
using std::string ;
using std::vector ;
using std::pair ;

int main()
{
    double R;
    cin >> R;
    
    double pi = 3.14159;
    
    cout << (pi*R*R) << endl;
}


Compiler output:
a.cc:1:10: fatal error: bits/stdc++: No such file or directory
    1 | #include <bits/stdc++>
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main () {
  int r,a;
  cin >> r;
  
  a = r*2*M_PI 
  cout << a << endl;
  
  return 0;
}   

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

#include<iostream>
#define PI 3.1415
using namespace std;

int main() {
	inr r;
	cin >> r;
	r = r * 2 * PI;
	cout << r << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'inr' was not declared in this scope; did you mean 'int'?
    6 |         inr r;
      |         ^~~
      |         int
a.cc:7:16: error: 'r' was not declared in this scope
    7 |         cin >> r;
      |                ^
Language: C++

#include<iostream>
#define PI 3.1415
using namespace std;

int main() {
	inr r;
	cin >> r;
	r = r * 2 * PI;
	cout << r<<endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'inr' was not declared in this scope; did you mean 'int'?
    6 |         inr r;
      |         ^~~
      |         int
a.cc:7:16: error: 'r' was not declared in this scope
    7 |         cin >> r;
      |                ^
Language: C

#include <stdio.h>
#include <stdlib.h>
int Question163B(void) {
	int insdate = 0;
	int inhome = 0;
	int inhdate[10001];
	(void)scanf("%d%d", &insdate, &inhome);
	for (int k = 0; k < inhome; k++) (void)scanf("%d", &inhdate[k]);
	int num = 0;
	for (int i = 0; i < inhome; i++) num = num + inhdate[i];
	if (num > insdate) printf("%d\n", -1);
	else printf("%d\n", insdate - num);
	return 0;
}

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

import math
x = input()

# 円の周を計算する
def circle_round(radius):
  return 2 * math.pi * radius

if __name__ == '__main__':
  print(circle_round(int(x)))

Compiler output:
Main.java:1: error: '.' expected
import math
           ^
Main.java:2: error: ';' expected
x = input()
 ^
Main.java:4: error: illegal character: '#'
# ????????
^
Main.java:8: error: unclosed character literal
if __name__ == '__main__':
               ^
Main.java:8: error: unclosed character literal
if __name__ == '__main__':
                        ^
5 errors
Language: C++

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

int main() {
int R;
  cin >> R;
  cout << 2*R*π << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:15: error: '\U000003c0' was not declared in this scope
    7 |   cout << 2*R*π << endl;
      |               ^
Language: C++

#include<bits/stdc+.h>
using namespace std;
int main()
{
  float r;cin>>r;
  cout<<2*r*3.1428;
}

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

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const pi=3.1415;
int main()
{
int r;
cin>>r;
cout<<2*r*pi;

return 0;

}

Compiler output:
a.cc:4:7: error: 'pi' does not name a type
    4 | const pi=3.1415;
      |       ^~
a.cc: In function 'int main()':
a.cc:9:11: error: 'pi' was not declared in this scope
    9 | cout<<2*r*pi;
      |           ^~
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const pi=3.1415;
int main()
{
int r;
cin>>r;
cout<<r*pi;

return 0;

}

Compiler output:
a.cc:4:7: error: 'pi' does not name a type
    4 | const pi=3.1415;
      |       ^~
a.cc: In function 'int main()':
a.cc:9:9: error: 'pi' was not declared in this scope
    9 | cout<<r*pi;
      |         ^~
Language: C++

#include<iostream>
using namespace std;
int main(){
  int R,x;
  cin >> R;
  x == R*3.141592*2
  cout >> x >>endl;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:6:20: error: expected ';' before 'cout'
    6 |   x == R*3.141592*2
      |                    ^
      |                    ;
    7 |   cout >> x >>endl;
      |   ~~~~
Language: C++

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

int main() {
    unsigned int R;
    cin >> R;
    if (R >= 1 and R <= 100) {
        long double ans = 2.0*M_PI*R;
        cout << ans << endl;
    }
    return 0;

Compiler output:
a.cc: In function 'int main()':
a.cc:13:14: error: expected '}' at end of input
   13 |     return 0;
      |              ^
a.cc:6:12: note: to match this '{'
    6 | int main() {
      |            ^
Language: C

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

int main(){
    int R;
    cin >> R;
    cout << 2 * M_PI * R << endl;
}

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

#include<bits/stdc++.h>
using namespace std;
#define ll long long
int main(){
    double r,l,ans;
	cin>>r;
	l=3.14159265358979323846;
	ans=2*r*l;
	printf("%.20lf",ans);
    return 0;
}

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

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp> 
#include <ext/pb_ds/tree_policy.hpp> 
using namespace __gnu_pbds; 
using namespace std;
#define IOS {ios :: sync_with_stdio(false); cin.tie(0);cout.tie(0); }
#define F first
#define S second
#define pb push_back
typedef long double ld;
#define deci(n) cout << fixed << setprecision(n);
typedef long long ll;

#define mem0(x)  memset(x,0,sizeof(x));
#define mem1(x)  memset(x,1,sizeof(x));
#define memm1(x) memset(x,-1,sizeof(x));
#define all(a) a.begin(), a.end()
#define pll pair<ll, ll>
#define bits(x) __builtin_popcount(x)
#define fori(n)  for (ll i = 0; i < n; i++)
#define fori2(n) for(ll i=1;i<=n;i++)
#define forj(n)  for (ll j = 0; j < n; j++)
#define forj2(n) for(ll j=1;j<=n;j++)
#define fork(n)  for (ll k = 0; k < n; k++)
#define fork2(n) for(ll k=1;k<=n;k++)
#define vll vector <ll>
#define mll map <ll, ll>
#define vpll vector <pll>
#define pi acos(-1)
const ll md = 1e9 + 7;

#define BSET(a, p) ((a) | (1ll << (p)))
#define BCHK(a, p) ((a) & (1ll << (p)))
#define BXOR(a, p) ((a) ^ (1ll << (p)));
#define BREM(a, p) (BCHK(a, p)?(BXOR(a, p)):(a))
#define BSHO(a, N) (bitset<N>(a))
// const ll N = 100005;
// ll fac[N] = {1};
// #define calfac for(ll i=1  ;i<N;i++) fac[i] = (fac[i-1]*i)%md;
// ll C[N+1][M+1]; 
// void  ncr(){
//     ll n = N,k = M; 
//     for (ll i = 0; i <= n; i++) { 
//         for (ll j = 0; j <= min(i, k); j++) { 
//             if (j == 0 || j == i)  C[i][j] = 1; 
//             else C[i][j] = C[i - 1][j - 1] +  C[i - 1][j]; 
//         } 
//     } 
// } 


#define RBTTYPE int
#define ordered_set tree<RBTTYPE, null_type, less<RBTTYPE>, rb_tree_tag,tree_order_statistics_node_update> 
// Ordered set docs:
// order_of_key (k) : Number of items strictly smaller than k .
// find_by_order(k) : K-th element in a set (counting from zero).
ll modexp(ll x, ll ex) {
    ll ans = 1ll;
    while (ex > 0) {
        if (ex & 1ll) ans = (ans * x) % md;
        ex >>= 1ll;
        x = (x * x) % md;
    }
    return ans;
}
ll modInv(ll a)
{
    return pow(a,md-2);
}
 
// ll nCr(ll n,ll r)
// {
//     return (fac[n]*modInv((fac[r]*fac[n-r])%md))%md;
// }

 
ll po(ll x,ll n){
    if(n==0) return 1;
    if(n%2==1) return (x*po(x,n-1));
    else {
        ll k=po(x,n/2);
        return (k*k);
    }
}
 
ll gcd(ll x, ll y) {
    if (x < y) return gcd(y, x);
    if (y == 0) return x;
    return gcd(y, x % y);
}
 
int32_t main(){
    IOS;
    deci(10);
    ll r;
    cin >> r;
    cout << 2*pi*r<<"\n";


} 

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;

public class Main163{
	public static void main(String args[]){
		
		Scanner sc = new Scanner(System.in);
		int R = sc.nextInt();
		
		System.out.println(2*R*3.14);
	}
}

Compiler output:
Main.java:3: error: class Main163 is public, should be declared in a file named Main163.java
public class Main163{
       ^
1 error
Language: C

import math
r = int(input())
print(2*r*math.pi)

Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
main.c:2:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'r'
    2 | r = int(input())
      | ^
Language: Java

package CirclePond;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class CirclePond{

	public static void main(String[] args) {
		CirclePond cd = new CirclePond();
        System.out.println(cd.calculate());
	}

    private final String ERROR_INPUT_INT = "入力値は実数ではありません。";

    private String input() throws IOException{
        String line;
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        line = reader.readLine();
        return line;
    }


    public Integer inputInt() { //double型の数値を入力できるメソッド
        try{
            String value = this.input();
            Integer n = Integer.parseInt(value);
            return n;
        }
        catch (Exception s){
            System.out.println(ERROR_INPUT_INT);
            return this.inputInt();
        }
    }

	public double calculate() {
		return 2*this.inputInt()*Math.PI;
	}

}

Compiler output:
Main.java:7: error: class CirclePond is public, should be declared in a file named CirclePond.java
public class CirclePond{
       ^
1 error
Language: Java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class CirclePond{

	public static void main(String[] args) {
		CirclePond cd = new CirclePond();
        System.out.println(cd.calculate());
	}

    private final String ERROR_INPUT_INT = "入力値は実数ではありません。";

    private String input() throws IOException{
        String line;
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        line = reader.readLine();
        return line;
    }


    public Integer inputInt() { //double型の数値を入力できるメソッド
        try{
            String value = this.input();
            Integer n = Integer.parseInt(value);
            return n;
        }
        catch (Exception s){
            System.out.println(ERROR_INPUT_INT);
            return this.inputInt();
        }
    }

	public double calculate() {
		return 2*this.inputInt()*Math.PI;
	}

}

Compiler output:
Main.java:5: error: class CirclePond is public, should be declared in a file named CirclePond.java
public class CirclePond{
       ^
1 error
Language: C++

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

int main()
{
  int R;
  cin >> R;
  cout << R*2*pi << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: 'pi' was not declared in this scope
    8 |   cout << R*2*pi << endl;
      |               ^~
Language: C

import math 
r = int(input())
print (str(2 *r * math.pi))

Compiler output:
main.c:1:1: error: unknown type name 'import'
    1 | import math
      | ^~~~~~
main.c:2:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'r'
    2 | r = int(input())
      | ^
Language: C

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

int main() {
  int R;
  cin >> R;
  cout << 2 * M_PI * R << endl;
}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h?
using namespace std;
int main(){
int R;
  cin>>R;
  cout<<R*2*3.14;

}

Compiler output:
a.cc:1:25: error: missing terminating > character
    1 | #include <bits/stdc++.h?
      |                         ^
a.cc:1:10: fatal error: bits/stdc++.h?: No such file or directory
    1 | #include <bits/stdc++.h?
      |          ^
compilation terminated.
Language: C

#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<queue>
#include<map>
#include<math.h>
#include<numeric>
#include<utility>
#include<unordered_map> //hash map
#include<cmath>

#define rep(i,a,n) for(int (i)=(a);(i)<(n);(i)++)
#define rrep(i,a,n) for(int (i)=(a);(i)>=(n);(i)--)

#define INF 10000007

typedef  long long ll;

using namespace std;

ll gcd(ll a,ll b){
    if (b==0)return a;
    return gcd(b,a%b);
}

ll deg(int i){
  ll ret = 1;
  while(i != 0){
    if(i/10 == 0){
      break;
    }
    i/=10;
  }
  return i;
}

void solve(){
  double r;
  cin >> r;
  cout << 3.1415*r*2 << endl;
}


int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    solve();
}


Compiler output:
main.c:1:9: fatal error: iostream: No such file or directory
    1 | #include<iostream>
      |         ^~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
#include <bits/stdc++.hpp>
#include <vector>
#include <string>

using namespace std;

void Cont(){
    uint8_t R;
    cin >> R;
    cout << R * _Pi;
}


int main()
{
	std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed << std::setprecision(15);
    Cont();
}





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

#include <iostream>
#include<bits/stdc++.hpp>
#include <vector>
#include <string>

using namespace std;

void Cont(){
    uint8_t R;
    cin >> R;
    cout << R * std::_Pi;
}


int main()
{
	std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed << std::setprecision(15);
    Cont();
}





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

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


int main() {
double N;
cin >> N;
std::cout<<std::fixed<<std::setprecision(10);
cout << 2 * N * 3.1415926 << endl;
}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
#include"/bits/stdc++.hpp"
#include <vector>
#include <string>

using namespace std;

void Cont(){
    uint8_t R;
    cin >> R;
    cout << R * std::_Pi;
}


int main()
{
	std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed << std::setprecision(15);
    Cont();
}





Compiler output:
a.cc:2:9: fatal error: /bits/stdc++.hpp: No such file or directory
    2 | #include"/bits/stdc++.hpp"
      |         ^~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
#include"../bits/stdc++.hpp"
#include <vector>
#include <string>

using namespace std;

void Cont(){
    uint8_t R;
    cin >> R;
    cout << R * std::_Pi;
}


int main()
{
	std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed << std::setprecision(15);
    Cont();
}





Compiler output:
a.cc:2:9: fatal error: ../bits/stdc++.hpp: No such file or directory
    2 | #include"../bits/stdc++.hpp"
      |         ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include <iostream>
#include"/bits/stdc++.hpp"
#include <vector>
#include <string>

using namespace std;

void Cont(){
    uint8_t R;
    cin >> R;
    cout << R * std::_Pi;
}


int main()
{
	std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed << std::setprecision(15);
    Cont();
}





Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C

#include <iostream>
//#include"../bits/stdc++.hpp"
#include <vector>
#include <string>

using namespace std;

void Cont(){
    uint8_t R;
    cin >> R;
    cout << R * std::_Pi;
}


int main()
{
	std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed << std::setprecision(15);
    Cont();
}





Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C

#include <iostream>
#include"../bits/stdc++.hpp"
#include <vector>
#include <string>

using namespace std;

void Cont(){
    uint8_t R;
    cin >> R;
    cout << R * std::_Pi;
}


int main()
{
	std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed << std::setprecision(15);
    Cont();
}





Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>
using namespace std;
int main() {
  double R;
  cin>>R;
  cout<<2*R*M_PI<<endl;
  return 0;}
  

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>

using namespace std ;

int main(){
    double r;
    cin>>r;
    cout<<2*r*3.141592<<endl;
}

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

#include <iostream>
#include <queue>
#include <map>
#include <cmath>
#include <algorithm>
#include <queue>
#include <cstdarg>
#include <set>
#include <limits>
#include <iomanip>

using namespace std;
#define INF 2e9 + 9
#define MOD 1000000007
#define ALL(v) v.begin() , v.end()
#define Int int64_t
#define pll pair<Int,Int>
template<class T> using pql = priority_queue<T, vector<T>>;
template<class T> using pq = priority_queue<T, vector<T>, greater<T>>;
#define ll(n) Int n; cin >> n;
#define LL(...) Int __VA_ARGS___; cin >> __VA_ARGS___;
#define OUT(...) cout << __VA_ARGS___;
#define RP(n, i, s) for(Int i = s ;i < n ;i++)
#define REP(n, i) for (Int i = 0; i < n; i++)
#define REPe(n, i) for (Int i = 1; i <= n; i++)
#define RPe(n, i, s) for (Int i = s; i <= n; i++)
#define upd_max(maxer, updater) if (maxer < updater) maxer = updater;
#define upd_min(miner, updater) if (miner > updater) miner = updater;

void ansYes(bool flag){
    if (flag) cout << "Yes" << endl; else  cout << "No" << endl;
}

void ansYES(bool flag){
    if (flag) cout << "YES" << endl; else  cout << "NO" << endl;
}

struct node {
    Int to;
    Int length;
};


vector<Int> divisor(Int n) {
    vector<Int> ret;
    for (Int i = 1; i * i <= n; i++) {
        if (n % i == 0) {
            ret.push_back(i);
            if (i * i != n) ret.push_back(n / i);
        }
    }
    return (ret);
}

/*
vector<vector<int>> to;
vector<int> flag;
vector<int> c;


Int dfs(int from, int mae) {
    flag[from] = 1;
    Int mini = 0;
    for (auto next : to[from]) {
        if (next == mae) continue;
        if (flag[next] == 1) {
            return -1;
        } else {
            mini = min(mini, dfs(next, from));
        }
    }
    return mini;
}*/

int dx8[8] = {0, -1, -1, -1, 0, 1, 1, 1};
int dy8[8] = {-1, -1, 0, 1, 1, 1, 0, -1};

int nanko(string s,Int n,Int i){
    Int length = min(n - i - 1,i);
    Int ans = 0;
    for (int k = i-length;k < i;k++){
        if (s.at(k) == 'R' && s.at(i +  (i - k) == 'B')) ans++;
    }
    return ans;
}


int main() {
    long double d;
    cin >> d;
    cout << setprecision(15) << (2 * d * M_PI) << endl;
}

Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>
using namespace std;
#define rep(i,N) for(int i = 0; i < (N); i++)
#define repo(i,N) for(int i = 1; i < (N); i++)
//#define int long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
//#define num 1000000007
#define pi acos(-1.0)
//cout << fixed << setprecision (10);   小数点以下１０桁まで
//intの最大値2147483647 ≒ 2×10^9
//long longの最大値9223372036854775807 ≒ 9×10^18
//'大文字'+=32;    で小文字に
//string s = to_string(int数);
//int n = stoi(string文字列);

int main() {
  int a;
  cin >>a;
  
  cout << fixed << setprecision (10);
  
  cout << 2*pi*a << endl;
  
}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.Scanner;
public class A {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		int t = 1;
		//t = input.nextInt();
		while(t-- > 0) {
			int n = 0;
			n = input.nextInt();
			System.out.println((double)n * 2 * Math.PI);
		}
	}
}


Compiler output:
Main.java:2: error: class A is public, should be declared in a file named A.java
public class A {
       ^
1 error
Language: Java

import java.util.Scanner;
public class A {
	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		int t = 1;
		final double PI = Math.acos(0);
		//t = input.nextInt();
		while(t-- > 0) {
			int n = 0;
			n = input.nextInt();
			System.out.println((double)n * 2 * Math.PI);
		}
	}
}


Compiler output:
Main.java:2: error: class A is public, should be declared in a file named A.java
public class A {
       ^
1 error
Language: C

#include<stdio.h>
#include<math.h>
int main(vpoid)
{
   int r;
   double l;

   scanf("%d",&r);
   l=r(double)*2*M_PI;
   printf("%.10lf\n",l);
   return 0;
}


Compiler output:
main.c: In function 'main':
main.c:3:5: error: type of 'vpoid' defaults to 'int' [-Wimplicit-int]
    3 | int main(vpoid)
      |     ^~~~
main.c:9:8: error: expected expression before 'double'
    9 |    l=r(double)*2*M_PI;
      |        ^~~~~~
main.c:9:6: error: called object 'r' is not a function or function pointer
    9 |    l=r(double)*2*M_PI;
      |      ^
main.c:5:8: note: declared here
    5 |    int r;
      |        ^
Language: C

#include <iostream>
#include <cmath>

using namespace std;

int main() {
    std::ios::sync_with_stdio(false);
    
    double r;
    std::cin >> r;
    std::cout << 2 * r * M_PI << std::endl;




	return 0;
}


Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>

using namespace std;

int main() {
    std::ios::sync_with_stdio(false);
    
    double r;
    std::cin >> r;
    std::cout << 2 * r * M_PI << std::endl;




	return 0;
}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

  1 #include <bits/stdc++.h>
  2 
  3 using namespace std;
  4 
  5 int main() {
  6     std::ios::sync_with_stdio(false);
  7 
  8     double r;
  9     std::cin >> r;
 10     std::cout << 2 * r * M_PI << std::endl;
 11 
 12 
 13 
 14 
 15     return 0;
 16 }
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                                                                                                                                             
~                                   

Compiler output:
main.c:1:3: error: expected identifier or '(' before numeric constant
    1 |   1 #include <bits/stdc++.h>
      |   ^
main.c:1:5: error: stray '#' in program
    1 |   1 #include <bits/stdc++.h>
      |     ^
main.c:4:3: error: expected identifier or '(' before numeric constant
    4 |   4
      |   ^
main.c:17:1: error: expected identifier or '(' before '~' token
   17 | ~
      | ^
Language: Java

import java.util.*;
public class A{
  public static void main(string[] args){
    Scanner sc = new Scanner(System.in);
    int t = sc.nextInt();
   int r = 2*3.14*t;
    System.out.println(r);
  }}
      

Compiler output:
Main.java:2: error: class A is public, should be declared in a file named A.java
public class A{
       ^
Main.java:3: error: cannot find symbol
  public static void main(string[] args){
                          ^
  symbol:   class string
  location: class A
Main.java:6: error: incompatible types: possible lossy conversion from double to int
   int r = 2*3.14*t;
                 ^
3 errors
Language: C

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <map>
#include <math.h>

#define rep(i,n) for(long long i=0;i<n;i++)
using namespace std;



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

    double ans=r*2*3.1415927;

    cout<<ans<<endl;
	

	
	
	
	return 0;
}

Compiler output:
main.c:1:10: fatal error: iostream: No such file or directory
    1 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.