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

#include<bits/stdc++.h>
using namespace std;
int main(){
  int N;
  cin >> N;
  int A = N / 2;
  double B = N;
  double C = A:
  double D = C / B;
  printf("%10.10lf", D);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:15: error: expected ',' or ';' before ':' token
    8 |   double C = A:
      |               ^
a.cc:10:22: error: 'D' was not declared in this scope
   10 |   printf("%10.10lf", D);
      |                      ^
Language: C++

#include<stdio.h>
int main(void)
{
	int n,k,h[100000],i,cnt;
	scanf("%d",&n);
	scanf("&d",&k);
	for(i=0;i<n;i++){
		scanf("%d",&h[i]);
	}
	for(i=0;i<n;i++){
		if(k<=h[i]){
			cnt++;
		}
	}
	printf("%d\n",cut);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:23: error: 'cut' was not declared in this scope; did you mean 'cnt'?
   15 |         printf("%d\n",cut);
      |                       ^~~
      |                       cnt
Language: Java

import java.util.*;
public class Main{
	public static void main(String[] args){
    	Scanner sc=new Scanner(System.in);
        int a=sc.nextInt();
        int b=1;
        int c=0;
        while(b<=a){
           if(b&2==1){
            c++;
           }
           b++;
        }
       System.out.println((double)(c/a));
    }
}

Compiler output:
Main.java:9: error: bad operand types for binary operator '&'
           if(b&2==1){
               ^
  first type:  int
  second type: boolean
1 error
Language: Java

#include<iostream>
using namespace std;

int main(){
    int n;
    cin>>n;
    if(n%2==0){
        cout<<0.5<<endl;
    }
    else{
        int x=n/2+1;
        double y=x;
        printf("%lf\n",y/n);
    }
    return 0;
}

Compiler output:
Main.java:1: error: illegal character: '#'
#include<iostream>
^
Main.java:1: error: class, interface, enum, or record expected
#include<iostream>
        ^
Main.java:6: error: not a statement
    cin>>n;
       ^
Main.java:8: error: not a statement
        cout<<0.5<<endl;
                 ^
Main.java:4: error: unnamed classes are a preview feature and are disabled by default.
int main(){
^
  (use --enable-preview to enable unnamed classes)
5 errors
Language: C

#include<stdio.h>
int main(void)
{
  int N;
  scanf("%d",&N);
  if (N%2==0) {
    printf("0.5");
  }else {
    printf("%lf",(N+1)/2/N));
  }
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:9:28: error: expected ';' before ')' token
    9 |     printf("%lf",(N+1)/2/N));
      |                            ^
      |                            ;
main.c:9:28: error: expected statement before ')' token
Language: Java

public class Main {

    public static void main(String[] args) throws Exception {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        String s = reader.readLine();

        Integer a = Integer.valueOf(s);

        if (a % 2 == 0) {
            System.out.println("0.5");
        } else {
            System.out.println(((a / 2) + 1) / (double) a);
        }
    }

}

Compiler output:
Main.java:5: error: cannot find symbol
        InputStreamReader is = new InputStreamReader(System.in);
        ^
  symbol:   class InputStreamReader
  location: class Main
Main.java:5: error: cannot find symbol
        InputStreamReader is = new InputStreamReader(System.in);
                                   ^
  symbol:   class InputStreamReader
  location: class Main
Main.java:6: error: cannot find symbol
        BufferedReader reader = new BufferedReader(is);
        ^
  symbol:   class BufferedReader
  location: class Main
Main.java:6: error: cannot find symbol
        BufferedReader reader = new BufferedReader(is);
                                    ^
  symbol:   class BufferedReader
  location: class Main
4 errors
Language: Java

    public static void main(String[] args) throws Exception {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        String s = reader.readLine();

        Integer a = Integer.valueOf(s);

        if (a % 2 == 0) {
            System.out.println("0.5");
        } else {
            System.out.println(((a / 2) + 1) / (double) a);
        }
    }

Compiler output:
Main.java:1: error: unnamed classes are a preview feature and are disabled by default.
    public static void main(String[] args) throws Exception {
                  ^
  (use --enable-preview to enable unnamed classes)
1 error
Language: Java

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

public class JavaApplication2 {

    public static void main(String[] args) throws Exception {

        InputStreamReader is = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(is);

        String s = reader.readLine();

        Integer a = Integer.valueOf(s);

        if (a % 2 == 0) {
            System.out.println("0.5");
        } else {
            System.out.println(((a / 2) + 1) / (double) a);
        }
    }

}


Compiler output:
Main.java:4: error: class JavaApplication2 is public, should be declared in a file named JavaApplication2.java
public class JavaApplication2 {
       ^
1 error
Language: C

#include<stdio.h>
int main(void)
{
  double N;
  scanf("%lf",&N);
  if (N%2==0) {
    printf("%lf",1/2);
  }else {
    printf("%lf",(N+1)/(2*N));
  }
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:6:8: error: invalid operands to binary % (have 'double' and 'int')
    6 |   if (N%2==0) {
      |        ^
Language: C++

#include <iostream>
using namespace std;

int main(){
    int N, od;
    cin >> N;

    if(N%2 == 0){
        od = N/2;
    }else{
        od = N/2 + 1;
    }

    cout << (double)od/(double)N << endl;

Compiler output:
a.cc: In function 'int main()':
a.cc:14:42: error: expected '}' at end of input
   14 |     cout << (double)od/(double)N << endl;
      |                                          ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: Java

Odd.java;
import java.util.Scanner;
public class Odd{
   public static void main(String[]args){
      Scanner sc=new Scanner(System.in);
      int odd=0;
      System.out.println("Enter N : ");
      int N=sc.nextInt();
      for(int i=1;i<=N;i++){
         if(i%2!=0)
            odd++;
      }
      double probability=(double)odd/N;
System.out.println("Probability : "+probability);
}
}

Compiler output:
Main.java:1: error: class, interface, enum, or record expected
Odd.java;
^
Main.java:2: error: class, interface, enum, or record expected
import java.util.Scanner;
^
2 errors
Language: Java

import java.util.Scanner;
public class Odd{
   public static void main(String[]args){
      Scanner sc=new Scanner(System.in);
      int odd=0;
      System.out.println("Enter N : ");
      int N=sc.nextInt();
      for(int i=1;i<=N;i++){
         if(i%2!=0)
            odd++;
      }
      double probability=(double)odd/N;
System.out.println("Probability : "+probability);
}
}

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

#include <stdio.h>
int main(){
  int n,c;
  scanf("%d",&n);
  if(n%2==0){
    c=n/2;
    
  }
  else{
    c=(n/2+1);
  }
 float z=c/n;
  printf("%f",z);
  return 0;
  

Compiler output:
main.c: In function 'main':
main.c:14:3: error: expected declaration or statement at end of input
   14 |   return 0;
      |   ^~~~~~
Language: C

#include <stdio.h>
int main(){
  int n,c;
  scanf("%d",&n);
  if(n%2==0){
    c=n/2;
    
  }
  else{
    c=(n/2+1);
  }
 float z=c/n;
  printf("%f",z);
  
  

Compiler output:
main.c: In function 'main':
main.c:13:3: error: expected declaration or statement at end of input
   13 |   printf("%f",z);
      |   ^~~~~~
Language: C++

#include<ioStream>
int N;
std::cin>>N;
if(N%2==0){
  const double pro = 1/2;
  std::cout<<pro<<endl;
}else{
  const double pro = (N + 1) / 2N;
  std::cout<<pro<<endl;
}


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

#include<iostream>
int N;
cin>>N;
if(N%2==0){
  const double pro = 1/2;
  cout<<pro<<endl;
}else{
  const double pro = (N + 1) / 2N;
  cout<<pro<<endl;
}


Compiler output:
a.cc:3:1: error: 'cin' does not name a type
    3 | cin>>N;
      | ^~~
a.cc:4:1: error: expected unqualified-id before 'if'
    4 | if(N%2==0){
      | ^~
a.cc:7:2: error: expected unqualified-id before 'else'
    7 | }else{
      |  ^~~~
Language: C++

#include<ioStream>
int N;
cin>>N;
if(N%2==0){
  const double pro = 1/2;
  cout<<pro<<endl;
}else{
  const double pro = (N + 1) / 2N;
  cout<<pro<<endl;
}


  

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

include <iostream>
using namespace std;
 
int main(){
	double a;
  cin >> a;
  double s = 0;
  for(int i = 1;i < a+1;i++){
    if (i % 2 == 1){
    	 s++;
    }
  }
  
  cout << s / a;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <iostream>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> a;
      |   ^~~
a.cc:14:3: error: 'cout' was not declared in this scope
   14 |   cout << s / a;
      |   ^~~~
Language: C++

#include iostream
using namespace std;

int main(){
	double a;
  cin >> a;
  double s = 0;
  for(int i = 1;i < a+1;i++){
    if (i % 2 == 1){
    	 s++;
    }
  }
  
  cout << s / a;
}

Compiler output:
a.cc:1:10: error: #include expects "FILENAME" or <FILENAME>
    1 | #include iostream
      |          ^~~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> a;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #include iostream
a.cc:14:3: error: 'cout' was not declared in this scope
   14 |   cout << s / a;
      |   ^~~~
a.cc:14:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main()
{
	int N;
  	cin >> N;
  	cout << ((static_cast<int>(N / 2) + 1) / N) << endl;
  	retunr 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: error: 'retunr' was not declared in this scope
   10 |         retunr 0;
      |         ^~~~~~
Language: C++

#include <iostream>
using namespace std;
int main()
{
  double N {0};
  double ans {0};
  cin >> N;
  if(N==1) ans==1;
  else if(N%2.0==0) ans=N/2.0;
  else ans = ((N-(N-1.0)/2.0) / N);
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:12: error: invalid operands of types 'double' and 'double' to binary 'operator%'
    9 |   else if(N%2.0==0) ans=N/2.0;
      |           ~^~~~
      |           | |
      |           | double
      |           double
Language: C++

#include <iostream>
using namespace std;
int main()
{
  double N {0};
  double ans {0};
  cin >> N;
  if(N==1) ans==1;
  else if(N%2==0) ans=N/2;
  else ans = ((N-(N-1)/2) / N);
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:12: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    9 |   else if(N%2==0) ans=N/2;
      |           ~^~
      |           | |
      |           | int
      |           double
Language: C++

#include <iostream>
using namespace std;
int main()
{
  double N {0};
  double ans {0};
  cin >> N;
  if(N==1) ans==1;
  else if(N%2==0) ans=n/2;
  else ans = ((N-(N-1)/2) / N);
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:12: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    9 |   else if(N%2==0) ans=n/2;
      |           ~^~
      |           | |
      |           | int
      |           double
a.cc:9:23: error: 'n' was not declared in this scope
    9 |   else if(N%2==0) ans=n/2;
      |                       ^
Language: C++

#include "iostream"
#include <vector>

int main(void){
  int N;
  std::cin >> N;
  int count = 0;
  
  for(int i = 1; i <= N; i++;){
    if(i % 2 = 1){
      count++;
    }
  }

  int pro = count / N;

  std::cout << pro;
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:29: error: expected ')' before ';' token
    9 |   for(int i = 1; i <= N; i++;){
      |      ~                      ^
      |                             )
a.cc:9:30: error: expected primary-expression before ')' token
    9 |   for(int i = 1; i <= N; i++;){
      |                              ^
Language: C

#iinclude<stdio.h>
int main(void){
    double a,i,count=0;
    scanf("%lf",&a);
    for(i=1;i<=a;i++){
        if(i%2!=0){
          count = count +1;
    }
    printf("%f",count/a);
}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #iinclude; did you mean #include?
    1 | #iinclude<stdio.h>
      |  ^~~~~~~~
      |  include
main.c: In function 'main':
main.c:4:5: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    4 |     scanf("%lf",&a);
      |     ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #iinclude<stdio.h>
main.c:4:5: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    4 |     scanf("%lf",&a);
      |     ^~~~~
main.c:4:5: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:6:13: error: invalid operands to binary % (have 'double' and 'int')
    6 |         if(i%2!=0){
      |             ^
main.c:9:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    9 |     printf("%f",count/a);
      |     ^~~~~~
main.c:9:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:9:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:10:1: error: expected declaration or statement at end of input
   10 | }
      | ^
Language: Java

  1 import java.util.Scanner;//入力を取得する(Scanner)
  2 
  3 class Main {
  4         public static void main(String arts[]) {
  5                        int N;
  6                        Scanner sc = new Scanner(System.in);
  7                        N = sc.nextInt();
  8 
  9                        int target;
 10                        target = (N+1) / 2;// kiriage
 11                        double n = N;
 12 
 13                        System.out.println(target / n );
 14                        return; 
 15                }
 16     }


Compiler output:
Main.java:1: error: class, interface, enum, or record expected
  1 import java.util.Scanner;//???????(Scanner)
  ^
Main.java:2: error: class, interface, enum, or record expected
  2 
  ^
Main.java:4: error: illegal start of type
  4         public static void main(String arts[]) {
  ^
Main.java:5: error: not a statement
  5                        int N;
  ^
Main.java:5: error: ';' expected
  5                        int N;
   ^
Main.java:6: error: not a statement
  6                        Scanner sc = new Scanner(System.in);
  ^
Main.java:6: error: ';' expected
  6                        Scanner sc = new Scanner(System.in);
   ^
Main.java:7: error: not a statement
  7                        N = sc.nextInt();
  ^
Main.java:7: error: ';' expected
  7                        N = sc.nextInt();
   ^
Main.java:8: error: not a statement
  8 
  ^
Main.java:8: error: ';' expected
  8 
   ^
Main.java:10: error: not a statement
 10                        target = (N+1) / 2;// kiriage
 ^
Main.java:10: error: ';' expected
 10                        target = (N+1) / 2;// kiriage
   ^
Main.java:11: error: not a statement
 11                        double n = N;
 ^
Main.java:11: error: ';' expected
 11                        double n = N;
   ^
Main.java:12: error: not a statement
 12 
 ^
Main.java:12: error: ';' expected
 12 
   ^
Main.java:14: error: not a statement
 14                        return; 
 ^
Main.java:14: error: ';' expected
 14                        return; 
   ^
Main.java:15: error: not a statement
 15                }
 ^
Main.java:15: error: ';' expected
 15                }
   ^
Main.java:16: error: illegal start of type
 16     }
 ^
22 errors
Language: Java

  1 import java.util.Scanner;//入力を取得する(Scanner) 
  2  
  3 class main { 
  4         public static void main(String arts[]) { 
  5                        double N; 
  6                        Scanner sc = new Scanner(System.in); 
  7                        N = sc.nextDouble(); 
  8  
  9                        int target; 
 10                        target = N / 2; 
 11  
 12                        System.out.println(target / N ); 
 13                        return;  
 14                } 
 15     } 
~                                          

Compiler output:
Main.java:1: error: class, interface, enum, or record expected
  1 import java.util.Scanner;//???????(Scanner) 
  ^
Main.java:2: error: class, interface, enum, or record expected
  2  
  ^
Main.java:4: error: illegal start of type
  4         public static void main(String arts[]) { 
  ^
Main.java:5: error: not a statement
  5                        double N; 
  ^
Main.java:5: error: ';' expected
  5                        double N; 
   ^
Main.java:6: error: not a statement
  6                        Scanner sc = new Scanner(System.in); 
  ^
Main.java:6: error: ';' expected
  6                        Scanner sc = new Scanner(System.in); 
   ^
Main.java:7: error: not a statement
  7                        N = sc.nextDouble(); 
  ^
Main.java:7: error: ';' expected
  7                        N = sc.nextDouble(); 
   ^
Main.java:8: error: not a statement
  8  
  ^
Main.java:8: error: ';' expected
  8  
   ^
Main.java:10: error: not a statement
 10                        target = N / 2; 
 ^
Main.java:10: error: ';' expected
 10                        target = N / 2; 
   ^
Main.java:11: error: not a statement
 11  
 ^
Main.java:11: error: ';' expected
 11  
   ^
Main.java:13: error: not a statement
 13                        return;  
 ^
Main.java:13: error: ';' expected
 13                        return;  
   ^
Main.java:14: error: not a statement
 14                } 
 ^
Main.java:14: error: ';' expected
 14                } 
   ^
Main.java:15: error: illegal start of type
 15     } 
 ^
Main.java:16: error: class, interface, enum, or record expected
~                                          
^
21 errors
Language: Java

import java.util.*;

class Main{
    public static void main (String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        double ans;
        if(n!=1){
            ans = (n%2==0)?0.5:0.6;
        }
        else{
            ans = 1;
        }
        system.out.println(ans);
    }
}

Compiler output:
Main.java:14: error: package system does not exist
        system.out.println(ans);
              ^
1 error
Language: Java

import java.util.*;

class Main{
    public static void main (String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        long ans;
        if(n!=1){
            ans = (n%2==0)?0.5:0.6;
        }
        else{
            ans = 1;
        }
        system.out.println(ans);
    }
}

Compiler output:
Main.java:9: error: incompatible types: possible lossy conversion from double to long
            ans = (n%2==0)?0.5:0.6;
                          ^
Main.java:14: error: package system does not exist
        system.out.println(ans);
              ^
2 errors
Language: Java


import java.util.Scanner;

public class main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        double counter = 0;
        for (int i=1; i<=N; i++) {
            if (i%2==1) {
                counter++;
            }
        }
        System.out.println(counter/N);
    }
}



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

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

int main()
{
  char a,;
  double b;
  if(a%2==1)
  {
    b=a/2
  }
  else
  {
    cout<<0.5000000000<<endl;
    break;
  }
  cout<<b/a<<endl;
}
    

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

#include "pch.h"
#include <iostream>

using namespace std;
int main()
{
	int n;
	cin >> n;
	if (n % 2 == 0)
	{
		cout << (n/2) / float(n);
	}
	else
	{
		cout << (n / 2 + 1) / float(n);
	}
}

Compiler output:
a.cc:1:10: fatal error: pch.h: No such file or directory
    1 | #include "pch.h"
      |          ^~~~~~~
compilation terminated.
Language: C++

// ConsoleApplication1.cpp : このファイルには 'main' 関数が含まれています。プログラム実行の開始と終了がそこで行われます。
//

#include "pch.h"
#include <iostream>

using namespace std;
int main()
{
	int n;
	cin >> n;
	if (n % 2 == 0)
	{
		cout << (n/2) / float(n);
	}
	else
	{
		cout << (n / 2 + 1) / float(n);
	}
}

// プログラムの実行: Ctrl + F5 または [デバッグ] > [デバッグなしで開始] メニュー
// プログラムのデバッグ: F5 または [デバッグ] > [デバッグの開始] メニュー

// 作業を開始するためのヒント: 
//    1. ソリューション エクスプローラー ウィンドウを使用してファイルを追加/管理します 
//   2. チーム エクスプローラー ウィンドウを使用してソース管理に接続します
//   3. 出力ウィンドウを使用して、ビルド出力とその他のメッセージを表示します
//   4. エラー一覧ウィンドウを使用してエラーを表示します
//   5. [プロジェクト] > [新しい項目の追加] と移動して新しいコード ファイルを作成するか、[プロジェクト] > [既存の項目の追加] と移動して既存のコード ファイルをプロジェクトに追加します
//   6. 後ほどこのプロジェクトを再び開く場合、[ファイル] > [開く] > [プロジェクト] と移動して .sln ファイルを選択します


Compiler output:
a.cc:4:10: fatal error: pch.h: No such file or directory
    4 | #include "pch.h"
      |          ^~~~~~~
compilation terminated.
Language: C++

using namespace std;
typedef long long ll;
 
int main() {
    
    int n;
    int a;
    int ans;
    
    cin >> n;
    
    
    if(n%2 == 0){
        
        ans = 1/2;
    }
    
    else {
        
        
        ans = (n +  1)/2/n;
    }
    
    
    cout << ans << endl;
    
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:5: error: 'cin' was not declared in this scope
   10 |     cin >> n;
      |     ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:25:5: error: 'cout' was not declared in this scope
   25 |     cout << ans << endl;
      |     ^~~~
a.cc:25:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:25:20: error: 'endl' was not declared in this scope
   25 |     cout << ans << endl;
      |                    ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C++

#include <iostream>
usnig namespace std;

int main(){
	int n;
  float a;
  cin >> n;
  a = (n \ 2) \ n;
  cout << a;
  return 0;
}


Compiler output:
a.cc:8:10: error: stray '\' in program
    8 |   a = (n \ 2) \ n;
      |          ^
a.cc:8:15: error: stray '\' in program
    8 |   a = (n \ 2) \ n;
      |               ^
a.cc:2:1: error: 'usnig' does not name a type
    2 | usnig namespace std;
      | ^~~~~
a.cc: In function 'int main()':
a.cc:7:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |   cin >> n;
      |   ^~~
      |   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:8:9: error: expected ')' before numeric constant
    8 |   a = (n \ 2) \ n;
      |       ~ ^  ~
      |         )
a.cc:9:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |   cout << a;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include <iostream>
usnig namespace std;

int main(){
	int n;
  float a;
  cin >> n;
  a = (n \ 2) \ n
  cout << a;
  return 0;
}

Compiler output:
a.cc:8:10: error: stray '\' in program
    8 |   a = (n \ 2) \ n
      |          ^
a.cc:8:15: error: stray '\' in program
    8 |   a = (n \ 2) \ n
      |               ^
a.cc:2:1: error: 'usnig' does not name a type
    2 | usnig namespace std;
      | ^~~~~
a.cc: In function 'int main()':
a.cc:7:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |   cin >> n;
      |   ^~~
      |   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:8:9: error: expected ')' before numeric constant
    8 |   a = (n \ 2) \ n
      |       ~ ^  ~
      |         )
Language: C++

#include <stdio.h>


using namespace std;


int main(void){
  int N=0;
  double answer=0;

  cin >> N;
  
  if(N%2==0) answer=0.5;
 else{
   answer=(N+1)/2;
   answer=answer/N;
 }
  
  printf("%f", answer);
  
  return 0;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:3: error: 'cin' was not declared in this scope
   11 |   cin >> N;
      |   ^~~
a.cc:2:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    1 | #include <stdio.h>
  +++ |+#include <iostream>
    2 |
Language: C++

int main(void){
  int N=0;
  double a=0;
  cin >> N;
  
  if(N%2==0) a=0.5;
 else{
   a=(N+1)/2;
   a=a/N;
 }
  
  printf("%f", a);
  
  return 0;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope
    4 |   cin >> N;
      |   ^~~
a.cc:12:3: error: 'printf' was not declared in this scope
   12 |   printf("%f", a);
      |   ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | int main(void){
Language: C++

#include<bits/stdc++.h>

int main()
{
int N,P;
  cin>>N;
if(N%2!=0)
{
  P=((N+1)/2)/N;
}
else
{
  P=0.5;
}
  
cout<<P;
  
  return 0;
}

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

#include<iostrema>

int main(void)
{
  int n = 0;
  std::cin >> n;
  std::cout << static_cast<double>((n + 1) / 2) / static_cast<double>(n);
}

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

#include<iostream>
#include<string>
using namespace std;
 
int main()
{
	int nenner,
	double a;
	cin >> nenner;
	int zaehler;
	zaehler = int(nenner / 2);
	if ((nenner % 2) != 0) {
		++zaehler;
	}
	a = zaehler / nenner;
	string outp = std::to_string(a);
	cout << outp << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: expected unqualified-id before 'double'
    8 |         double a;
      |         ^~~~~~
a.cc:15:9: error: 'a' was not declared in this scope
   15 |         a = zaehler / nenner;
      |         ^
Language: Java

package solution;
import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;


    
    public class Solution{
        
        

   public static void main (String[] args)  throws IOException{

      Scanner sc=new Scanner(System.in);
      int N=0;
      if(sc.hasNextInt())
      {
          N=sc.nextInt();
      }
      int count=0;
      for(int i=0;i<=N;i++)
      {
          if(i%2!=0)
          {
              count++;
          }
      }
      
     
     double X=(double)count/N;
      System.out.println(X);
        
       
   }
   
}
   

Compiler output:
Main.java:12: error: class Solution is public, should be declared in a file named Solution.java
    public class Solution{
           ^
1 error
Language: Java

package solution;
import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;


    
    public class Solution{
        
        

   public static void main (String[] args)  throws IOException{

      Scanner sc=new Scanner(System.in);
      int N=0;
      if(sc.hasNextInt())
      {
          N=sc.nextInt();
      }
      int count=0;
      for(int i=0;i<=N;i++)
      {
          if(i%2!=0)
          {
              count++;
          }
      }
      System.out.println(count);
     
     double X=(double)count/N;
      System.out.println(X);
        
       
   }
   
}
   

Compiler output:
Main.java:12: error: class Solution is public, should be declared in a file named Solution.java
    public class Solution{
           ^
1 error
Language: Java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;


    
    public class Solution{
        
        

   public static void main (String[] args)  throws IOException{

      Scanner sc=new Scanner(System.in);
      int N=0;
      if(sc.hasNextInt())
      {
          N=sc.nextInt();
      }
      int count=0;
      for(int i=0;i<=N;i++)
      {
          if(i%2!=0)
          {
              count++;
          }
      }
      System.out.println(count);
     
     double X=(double)count/N;
      System.out.println(X);
        
       
   }
   
}
  

Compiler output:
Main.java:11: error: class Solution is public, should be declared in a file named Solution.java
    public class Solution{
           ^
1 error
Language: C++

#include <iostream>

int main(){
  int a;
  std::in >> a;

  if(a % 2){
    std::cout << 0.5 << std::endl;
  }
  else{
    std::cout << (a + 1) / (2.0 * a) << std::endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: 'in' is not a member of 'std'; did you mean 'min'?
    5 |   std::in >> a;
      |        ^~
      |        min
Language: C++

#include <iostream>

int main(){
  int a;
  std::in >> a;

  if(a % 2){
    return 1.0 / 2.0;
  }
  else{
    return a + 1 / (2.0 * a);
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: 'in' is not a member of 'std'; did you mean 'min'?
    5 |   std::in >> a;
      |        ^~
      |        min
Language: C++

#include<iostream>
using namespace std;
int main()
{
  int n;
  cin>>n;
  int count=0;
  for(int i=1;i<=n;i++)
    if(i%2!=0)
       count++;
  float x=float(count/n);
  cout<<fixed<<setprecision(10)<<x<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:16: error: 'setprecision' was not declared in this scope
   12 |   cout<<fixed<<setprecision(10)<<x<<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 <iostream>
using namespace std;

int main(){
  cin >> int n;
  if(n%2==0){
    cout<<0.5<<endl;
  }else if(n==1){
  cout<<1<<endl;
  }else{
    cout<<0.5*1/n<<endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:10: error: expected primary-expression before 'int'
    5 |   cin >> int n;
      |          ^~~
a.cc:6:6: error: 'n' was not declared in this scope
    6 |   if(n%2==0){
      |      ^
Language: C++

#include <iostream>
using namespace std;

int main(){
  int n >> cin;
  if(n&2==0){
    cout<<0.5<<endl;
  }else if(n==1){
  cout<<1<<endl;
  }else{
    cout<<0.5*1/n<<endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: expected initializer before '>>' token
    5 |   int n >> cin;
      |         ^~
a.cc:6:6: error: 'n' was not declared in this scope
    6 |   if(n&2==0){
      |      ^
Language: C++

#include <iostream>
using namespace std;

int main(){
  n >> cin;
  if(n&2==0){
    cout<<0.5<<endl;
  }else if(n==1){
  cout<<1<<endl;
  }else{
    cout<<0.5*1/n<<endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'n' was not declared in this scope
    5 |   n >> cin;
      |   ^
Language: C++

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

int main(){
  n << cin;
  if(n&2==0){
    cout<<0.5<<endl;
  }else if(n==1){
  cout<<1<<endl;
  }else{
    cout<<0.5*1/n<<endl;
  }
  return 0;
}

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

#include<bits/stdc++.h>
using namespace std;
int main(){
  double n;cin >> n;
  cout << fixed << setprecision() << 1 / ((n+1)/2) <<endl;
  return 0;
}
                                          

Compiler output:
a.cc: In function 'int main()':
a.cc:5:32: error: too few arguments to function 'std::_Setprecision std::setprecision(int)'
    5 |   cout << fixed << setprecision() << 1 / ((n+1)/2) <<endl;
      |                    ~~~~~~~~~~~~^~
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:143,
                 from a.cc:1:
/usr/include/c++/14/iomanip:202:3: note: declared here
  202 |   setprecision(int __n)
      |   ^~~~~~~~~~~~
Language: C

#include <stdio.h>

void main() {
	int N;
	int aaa = scanf("%d", &N);
  	int number_of_odd;
  	number_of_odd = (N + 1) / 2;
    printf("%lf¥n", (float)number_of_odd/(float)N));
 	return;
}

Compiler output:
main.c: In function 'main':
main.c:8:51: error: expected ';' before ')' token
    8 |     printf("%lf¥n", (float)number_of_odd/(float)N));
      |                                                   ^
      |                                                   ;
main.c:8:51: error: expected statement before ')' token
Language: C

#include <stdio.h>

void main() {
	int N;
	int aaa = scanf("%d", &N);
  	int number_of_odd;
  	number_of_odd = (N + 1) / 2;
    printf("%lf¥n", float(number_of_odd)/float(N));
 	return;
}

Compiler output:
main.c: In function 'main':
main.c:8:21: error: expected expression before 'float'
    8 |     printf("%lf¥n", float(number_of_odd)/float(N));
      |                     ^~~~~
Language: C

#include <stdio.h>

void main() {
	int N;
	aaa = scanf("%d", &N);
  	int number_of_odd;
  	number_of_odd = (N + 1) / 2;
    printf("%d¥n", number_of_odd);
 	return;
}

Compiler output:
main.c: In function 'main':
main.c:5:9: error: 'aaa' undeclared (first use in this function)
    5 |         aaa = scanf("%d", &N);
      |         ^~~
main.c:5:9: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <iostream>
using namespace std;


int main() {
  int n;
  cin >> n;
  int ev = n/2;
  int od = n-ev;
  double answer = (double) od/n;
  cout << answer;
}
return 0;

Compiler output:
a.cc:13:1: error: expected unqualified-id before 'return'
   13 | return 0;
      | ^~~~~~
Language: C++

#include<iostream>
using namespace std;


int main() {
  int n;
  cin >> n;
  int ev = n/2;
  int od = n-ev;
  double answer = (double) od/n;
  cout << answer;
}
return 0;

Compiler output:
a.cc:13:1: error: expected unqualified-id before 'return'
   13 | return 0;
      | ^~~~~~
Language: C++

#include <iostream>

using namespace std;

int main() {
   string s;
   cin>> s;
   if(s=="sunny")
   cout<<"cloudy"
   else ıf(s=="cloudy")
   cout<<"Rainy";
  else
  cout<<"sunny";

Compiler output:
a.cc: In function 'int main()':
a.cc:9:18: error: expected ';' before 'else'
    9 |    cout<<"cloudy"
      |                  ^
      |                  ;
   10 |    else ıf(s=="cloudy")
      |    ~~~~           
a.cc:13:17: error: expected '}' at end of input
   13 |   cout<<"sunny";
      |                 ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

#include <iostream>

using namespace std;

int main() {
    int a;
    int b;
    cin >> a >> b;
    if(b == 0){
    
        cout<<"Invalid";
    }
    else if(a<0 and b<0){
        cout<<"positive";
        
    }
if(a>0 v b<0)    {
    cout<<"negative";
        
    }
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:7: error: expected ')' before 'v'
   17 | if(a>0 v b<0)    {
      |   ~   ^~
      |       )
Language: C++

#include <iostream>

using namespace std;

int main() {
   int a;
   int b;
   cin >> a >> b;
   if (b == 0) {
       }
  
      cout << ''invalid operation'';
        }
      else if (a >= 0 and b > 0) {
          
          cout << ''positive '';
          }
    else if( a< 0 and b<0 {
        
        cout << '' positive'';
        }
    else if (a< 0 or b < 0){ 
    
              cout << '' negative'';
              }
             

Compiler output:
a.cc:12:15: error: empty character constant
   12 |       cout << ''invalid operation'';
      |               ^~~~~~~~~
a.cc:12:34: error: empty character constant
   12 |       cout << ''invalid operation'';
      |                                  ^~
a.cc:16:19: error: empty character constant
   16 |           cout << ''positive '';
      |                   ^~~~~~~~~~
a.cc:16:30: error: empty character constant
   16 |           cout << ''positive '';
      |                              ^~
a.cc:20:17: error: empty character constant
   20 |         cout << '' positive'';
      |                 ^~
a.cc:20:28: error: empty character constant
   20 |         cout << '' positive'';
      |                            ^~
a.cc:24:23: error: empty character constant
   24 |               cout << '' negative'';
      |                       ^~
a.cc:24:34: error: empty character constant
   24 |               cout << '' negative'';
      |                                  ^~
a.cc: In function 'int main()':
a.cc:12:15: error: unable to find character literal operator 'operator""invalid' with 'char' argument
   12 |       cout << ''invalid operation'';
      |               ^~~~~~~~~
a.cc: At global scope:
a.cc:14:7: error: expected unqualified-id before 'else'
   14 |       else if (a >= 0 and b > 0) {
      |       ^~~~
a.cc:18:5: error: expected unqualified-id before 'else'
   18 |     else if( a< 0 and b<0 {
      |     ^~~~
a.cc:22:5: error: expected unqualified-id before 'else'
   22 |     else if (a< 0 or b < 0){
      |     ^~~~
Language: C++

#include <iostream>

using namespace std;

int main() {
    int a;
    int b;
    cin>>a;
    cin>>b;
    if(b==0){
        cout<<"Invalid operation";}
     else if(a>=0 and b>0){
         cout<< "Positive";
     }   
     else if(a<0 and b<0){
         cout<< "Positive";
         
     }
     else if(a==0){
         cout<<"Zero";
     }
     else {
         cout<<"Negative";
     }

Compiler output:
a.cc: In function 'int main()':
a.cc:24:7: error: expected '}' at end of input
   24 |      }
      |       ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

#include <iostream>
using namespace std;


int main() {
  int n;
  cin >> n;
  int ev = n/2;
  int od = n-ev;
  double answer = (double) od/n;
  cout << answer;

Compiler output:
a.cc: In function 'int main()':
a.cc:11:18: error: expected '}' at end of input
   11 |   cout << answer;
      |                  ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

#include <iostream>
   
using nameplace std;       
   
int main() {
    int n;
    cin >> n;
    int ev = n/2;
    int od = n-ev;
    double answer = (double) od/n;
    cout << answer;
}

Compiler output:
a.cc:3:7: error: expected nested-name-specifier before 'nameplace'
    3 | using nameplace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:7:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |     cin >> n;
      |     ^~~
      |     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:11:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |     cout << answer;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;
    int ev = n/2;
    int od = n-ev;
    int answer = od/n;
    double answer = (double) od/n;
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:12: error: conflicting declaration 'double answer'
   11 |     double answer = (double) od/n;
      |            ^~~~~~
a.cc:10:9: note: previous declaration as 'int answer'
   10 |     int answer = od/n;
      |         ^~~~~~
Language: C++

int main() {
    int n;
    cin >> n;
    int ev = n/2;
    int od = n-ev;
    double answer = (double) od/n;
    cout << answer;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin >> n;
      |     ^~~
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << answer;
      |     ^~~~
Language: C++

int main() {
    int n;
    cin >> n;
    int ev = n/2;
    int od = n-ev;
    double answer = (double) od/n;
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin >> n;
      |     ^~~
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << answer;
      |     ^~~~
Language: C++

int main() {
  int n;
  cin >> n;
  int ev = n/2;
  int od = n-ev;
  double answer = (double) od/n;
  cout << answer;

Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'cin' was not declared in this scope
    3 |   cin >> n;
      |   ^~~
a.cc:7:3: error: 'cout' was not declared in this scope
    7 |   cout << answer;
      |   ^~~~
a.cc:7:18: error: expected '}' at end of input
    7 |   cout << answer;
      |                  ^
a.cc:1:12: note: to match this '{'
    1 | int main() {
      |            ^
Language: C++


int main() {
    int n;
    cin >> n;
    int ev = n/2;
    int od = n-ev;
    double answer = (double)od/n;
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:5: error: 'cin' was not declared in this scope
    4 |     cin >> n;
      |     ^~~
a.cc:8:5: error: 'cout' was not declared in this scope
    8 |     cout << answer;
      |     ^~~~
Language: C++

int main() {
    int n;
    cin >> n;
    int ev = n/2;
    int od = n-ev;
    double answer = (double) od/n;
    cout << answer;

Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin >> n;
      |     ^~~
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << answer;
      |     ^~~~
a.cc:7:20: error: expected '}' at end of input
    7 |     cout << answer;
      |                    ^
a.cc:1:12: note: to match this '{'
    1 | int main() {
      |            ^
Language: C++

#include <iostream>

using namespace std;

int main() {
    int n;
    cin>>n;
    int ev = n/2;
    int od = n-ev;
    double answer = (double) od/n
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:5: error: expected ',' or ';' before 'cout'
   11 |     cout << answer;
      |     ^~~~
Language: C++

#include <iostream>

using namespace std;

int main() {
    int n;
    cin>>n;
    int ev = n/2;
    int od = n-ev;
    double answer = double od/n
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:21: error: expected primary-expression before 'double'
   10 |     double answer = double od/n
      |                     ^~~~~~
Language: C++

#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;
    int ev = n/2;
    int od = n-ev;
    double answer= ( double) od/n; 
    cout << answer;

Compiler output:
a.cc: In function 'int main()':
a.cc:11:20: error: expected '}' at end of input
   11 |     cout << answer;
      |                    ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

int main() {
    int n;
    cin >> n;
    int ev = n/2;
    int od = n-ev;
    int answer = (double)od/n;
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin >> n;
      |     ^~~
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << answer;
      |     ^~~~
Language: C++

#include <iostream>

using namespace std;

int main() {
   int n;
   cin >> n;
   int ev =n/2;
   int od = n-ev;
   double answer = (double)od/n;
  cout
   cout<< answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:7: error: expected ';' before 'cout'
   11 |   cout
      |       ^
      |       ;
   12 |    cout<< answer;
      |    ~~~~
Language: C++

int main() {
    int n;
    cin>>n;
    int ev = n/2;
    int od = n-ev;
    double answer = (double) od/n
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin>>n;
      |     ^~~
a.cc:7:5: error: expected ',' or ';' before 'cout'
    7 |     cout << answer;
      |     ^~~~
Language: C++

#include <iostream>

using namespace std;

int main() {
    int n ;
    cin>> n ;
    int ev=n/2;
    int od = n-ev ;
    double answer =(double ) od/n;
    cout<<answer ;
    
   
  

Compiler output:
a.cc: In function 'int main()':
a.cc:11:19: error: expected '}' at end of input
   11 |     cout<<answer ;
      |                   ^
a.cc:5:12: note: to match this '{'
    5 | int main() {
      |            ^
Language: C++

int main() {
    int n;
    cin>>n;
    int ev = n/2;
    int od = n-ev;
    double answer = double od/n
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin>>n;
      |     ^~~
a.cc:6:21: error: expected primary-expression before 'double'
    6 |     double answer = double od/n
      |                     ^~~~~~
Language: C++

int main() {
    int n;
    cin>> n;
    int ev =n/2;
    int od =n-ev;
    double answer = (double) od/n;
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin>> n;
      |     ^~~
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << answer;
      |     ^~~~
Language: C++

#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;
    int ev = n/2;
    int od = n-ev;
    double answer= ( double) pd/n; 
    cout << answer;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:30: error: 'pd' was not declared in this scope; did you mean 'od'?
   10 |     double answer= ( double) pd/n;
      |                              ^~
      |                              od