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

#include <bits/stdc++.h>

using namespace std;
using ll = long long int;
using P = pair<int, int>;

#define loop(i, n) for(int i = 0;i < n;i++)

int main(void){

    int n;
    cin >> n;

    cout << n*(n+1)/2

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:22: error: expected ';' before 'return'
   14 |     cout << n*(n+1)/2
      |                      ^
      |                      ;
   15 | 
   16 |     return 0;
      |     ~~~~~~
Language: C++

#include<bits/c++std.h>

using namespace std;

int main(void){
  int n;
  cin >> n;
  
  cout << (n+n+1)/2 << endl;
  
}

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

//8 may 2020
//count of solved problems : 2
#include<bits/stdc++.h>
using namespace std;

const int mod=1e9+7;

int n;

int main(){
	cin>>n;
	ll sum=0;
	for(int i=1;i<=n;i++)sum+=i;
		cout<<sum;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:12:9: error: 'll' was not declared in this scope
   12 |         ll sum=0;
      |         ^~
a.cc:13:30: error: 'sum' was not declared in this scope
   13 |         for(int i=1;i<=n;i++)sum+=i;
      |                              ^~~
a.cc:14:23: error: 'sum' was not declared in this scope
   14 |                 cout<<sum;
      |                       ^~~
Language: C++

#include "pch.h"
#include <bits/stdc++.h>

using namespace std;

int main() {

	long n;
	cin >> n;
	cout << n * (n + 1) / 2 << endl;
	return 0;

}

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

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

int main(){
  char  str[10];      //初期の入力
  char  out[10];      //出力用
  int   l, p=0;       //l:長さチェック p;行列の長さ把握

  scanf("%s",&str);
  l = strlen(str);    //入力された文章の長さをチェック

  for(i=0;i<l;i++){
    if(str[i] == '0'){
      out[i] = '0';
      p++;
    }else if(str[i] == '1'){
      out[i] = '1';
      p++
    }else{p--;}
  }
  printf("%s",out);
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:7: error: 'i' undeclared (first use in this function)
   12 |   for(i=0;i<l;i++){
      |       ^
main.c:12:7: note: each undeclared identifier is reported only once for each function it appears in
main.c:18:10: error: expected ';' before '}' token
   18 |       p++
      |          ^
      |          ;
   19 |     }else{p--;}
      |     ~
Language: C

#include<stdio.h>

int main(){
  int a,ans=0;
  scanf("%d",&a);
  for(i=1;i<=a;i++){
    ans+=a;
  }
  printf("%d",ans);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:7: error: 'i' undeclared (first use in this function)
    6 |   for(i=1;i<=a;i++){
      |       ^
main.c:6:7: note: each undeclared identifier is reported only once for each function it appears in
Language: Java

public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int sum = 0;
		
		for(int i = 1; i <= N; i++) {
			sum += i;
		}
		
		System.out.println(sum);
		
		scan.close();
	}

}


Compiler output:
Main.java:5: error: cannot find symbol
		Scanner scan = new Scanner(System.in);
		^
  symbol:   class Scanner
  location: class Main
Main.java:5: error: cannot find symbol
		Scanner scan = new Scanner(System.in);
		                   ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: Java

                import java.util.*;
        public class Main {
         
        	public static void main(String[] args) {
        		// TODO 自動生成されたメソッド・スタブ
        		Scanner sc = new Scanner(System.in);
              	int a = sc.nextInt();
              int sum = 0;
              	if(int i = 1; i <= a; i++) {
                  sum += i;
                }
              System.out.println(sum);
            }
        }

Compiler output:
Main.java:9: error: '.class' expected
              	if(int i = 1; i <= a; i++) {
              	       ^
Main.java:9: error: not a statement
              	if(int i = 1; i <= a; i++) {
              	                ^
Main.java:9: error: ';' expected
              	if(int i = 1; i <= a; i++) {
              	                         ^
3 errors
Language: C++

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

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:15: error: expected primary-expression before ';' token
    6 |   cin >> N >> ;
      |               ^
Language: C++

#include <bits/stdc++.h>
int main()
{
    int n;
    std::cin>>n;
    std::cout<<n*(n+1)/2<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:27: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    6 |     std::cout<<n*(n+1)/2<<endl;
      |                           ^~~~
      |                           std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127,
                 from a.cc:1:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int N,sum;
  cin>>N;
  
  for (int i=o;i<N;i++){
   sum +=i; 
  }
	cout<<sum<<endl;


}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: 'o' was not declared in this scope
    8 |   for (int i=o;i<N;i++){
      |              ^
Language: C++

#include <bits/stdc++.h>
#include <cstdio>
using namespace std;
 
int main() {
	int N;
  	cin >> N;
  
  	printf(N * (N + 1) / 2);
  	
  

}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:28: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
    9 |         printf(N * (N + 1) / 2);
      |                ~~~~~~~~~~~~^~~
      |                            |
      |                            int
In file included from /usr/include/c++/14/cstdio:42,
                 from /usr/include/c++/14/ext/string_conversions.h:45,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/stdio.h:363:43: note:   initializing argument 1 of 'int printf(const char*, ...)'
  363 | extern int printf (const char *__restrict __format, ...);
      |                    ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
Language: C

    #include<stdio.h>
     
    int main()
    {
      int a,b,N;
      clrscr();
      printf("enter a number");
      scanf("%d",&N);
      a=1;
      b=0;
      while(a<=N)
      {
         b=b+a;
         a=a+1;
      }
      printf("%d",b);
      getch();
    }

Compiler output:
main.c: In function 'main':
main.c:6:7: error: implicit declaration of function 'clrscr' [-Wimplicit-function-declaration]
    6 |       clrscr();
      |       ^~~~~~
main.c:17:7: error: implicit declaration of function 'getch'; did you mean 'getc'? [-Wimplicit-function-declaration]
   17 |       getch();
      |       ^~~~~
      |       getc
Language: C

    #include<stdio.h>

     
    void main()
    {
      int a,b,N;
      clrscr();
      printf("enter a number");
      scanf("%d",&N);
      a=1;
      b=0;
      while(a<=N)
      {
         b=b+a;
         a=a+1;
      }
      printf("%d",b);
      getch();
    }

Compiler output:
main.c: In function 'main':
main.c:7:7: error: implicit declaration of function 'clrscr' [-Wimplicit-function-declaration]
    7 |       clrscr();
      |       ^~~~~~
main.c:18:7: error: implicit declaration of function 'getch'; did you mean 'getc'? [-Wimplicit-function-declaration]
   18 |       getch();
      |       ^~~~~
      |       getc
Language: C

    #include<stdio.h>
    #include<conio.h>
     
    void main()
    {
      int a,b,N;
      clrscr();
      printf("enter a number");
      scanf("%d",&N);
      a=1;
      b=0;
      while(a<=N)
      {
         b=b+a;
         a=a+1;
      }
      printf("%d",b);
      getch();
    }

Compiler output:
main.c:2:13: fatal error: conio.h: No such file or directory
    2 |     #include<conio.h>
      |             ^~~~~~~~~
compilation terminated.
Language: C++

    #include<stdio.h>
    
     
    void main()
    {
      int a,b,N;
      clrscr();
      printf("enter a number");
      scanf("%d",&N);
      a=1;
      b=0;
      while(a<=N)
      {
         b=b+a;
         a=a+1;
      }
      printf("%d",b);
      getch();
    }

Compiler output:
a.cc:4:5: error: '::main' must return 'int'
    4 |     void main()
      |     ^~~~
a.cc: In function 'int main()':
a.cc:7:7: error: 'clrscr' was not declared in this scope
    7 |       clrscr();
      |       ^~~~~~
a.cc:18:7: error: 'getch' was not declared in this scope; did you mean 'getc'?
   18 |       getch();
      |       ^~~~~
      |       getc
Language: C++

    #include<stdio.h>
    #include<conio.h>
     
    void main()
    {
      int a,b,N;
      clrscr();
      
      scanf("%d",&N);
      a=1;
      b=0;
      while(a<=N)
      {
         b=b+a;
         a=a+1;
      }
      printf("%d",b);
      getch();
    }

Compiler output:
a.cc:2:13: fatal error: conio.h: No such file or directory
    2 |     #include<conio.h>
      |             ^~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;
class Main{
  public static void main(String[] arg){
    Scanner stdIn=new Scanner(System.in);
    int N=stdIn.nextInt();
    int total=0;
    for(int i=1;i<=N;i++){
      int total+=i;
    }
    System.out.println(total);
  }
}
      
    
    

Compiler output:
Main.java:8: error: ';' expected
      int total+=i;
               ^
Main.java:8: error: not a statement
      int total+=i;
                 ^
2 errors
Language: C

#include<stdio.h>
#include<conio.h>

void main()
{
  int a,b,N;
  clrscr();
  printf("enter a number");
  scanf("%d",&N);
  a=1;
  b=0;
  while(a<=N)
  {
     b=b+a;
     a=a+1;
  }
  printf("%d",b);
  getch();
}


Compiler output:
main.c:2:9: fatal error: conio.h: No such file or directory
    2 | #include<conio.h>
      |         ^~~~~~~~~
compilation terminated.
Language: C++

#include<stdio.h>
#include<conio.h>

void main()
{
  int a,b,N;
  clrscr();
  printf("enter a number");
  scanf("%d",&N);
  a=1;
  b=0;
  while(a<=N)
  {
     b=b+a;
     a=a+1;
  }
  printf("%d",b);
  getch();
}


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

#include<stdio.h>
void main()
{
  int a,b,N;
  clrscr();
  printf("enter a number");
  scanf("%d",&N);
  a=1;
  b=0;
  while(a<=N)
  {
     b=b+a;
     a=a+1;
  }
  printf("%d",b);
  getch();
}


Compiler output:
a.cc:2:1: error: '::main' must return 'int'
    2 | void main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:5:3: error: 'clrscr' was not declared in this scope
    5 |   clrscr();
      |   ^~~~~~
a.cc:16:3: error: 'getch' was not declared in this scope; did you mean 'getc'?
   16 |   getch();
      |   ^~~~~
      |   getc
Language: C++

#include<stdio.h>
#include<conio.h>
void main()
{
  int a,b,N;
  clrscr();
  printf("enter a number");
  scanf("%d",&N);
  a=1;
  b=0;
  while(a<=N)
  {
     b=b+a;
     a=a+1;
  }
  printf("%d",b);
  getch();
}

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

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

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

Compiler output:
a.cc:4:5: error: cannot declare '::main' to be a global variable
    4 | int main{
      |     ^~~~
a.cc:5:3: error: expected primary-expression before 'int'
    5 |   int N;
      |   ^~~
a.cc:5:3: error: expected '}' before 'int'
a.cc:4:9: note: to match this '{'
    4 | int main{
      |         ^
a.cc:6:3: error: 'cin' does not name a type
    6 |   cin>>N;
      |   ^~~
a.cc:7:3: error: 'cout' does not name a type
    7 |   cout<<N*(N+1)/2<<endl;
      |   ^~~~
a.cc:8:1: error: expected declaration before '}' token
    8 | }
      | ^
Language: C

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

{
   int n,i,r;

     scanf("%d",&n);

      r=0;
      
    for(i=1;i<=n;i++)
        r=r+i;

      printf("%d",r);

return 0;
}
~         

Compiler output:
main.c:18:1: error: expected identifier or '(' before '~' token
   18 | ~
      | ^
Language: C

 #include <stdio.h>
  2 int main(void)
  3 {
  4    int a,b,i;
  5    a=0;b=0;i=0;
  6    scanf("%d",&a);
  7    for(i=0;i<a;i++);
  8    b=b+i;
  9 
 10    printf("%d\n",b);
 11    return 0;                                                                
 12    }


Compiler output:
main.c:2:3: error: expected identifier or '(' before numeric constant
    2 |   2 int main(void)
      |   ^
Language: C++

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef double dd;
#define all(v) v.begin(),v.end()
#define endl "\n"
#define clr(n, r) memset(n,r,sizeof(n));

void fast() {

    cin.tie(0);
    cin.sync_with_stdio(0);
}

ll n, m;


int main() {
    fast();
    cin>>n;
    cout<<(n*(n+1))/2;

}#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef double dd;
#define all(v) v.begin(),v.end()
#define endl "\n"
#define clr(n, r) memset(n,r,sizeof(n));

void fast() {

    cin.tie(0);
    cin.sync_with_stdio(0);
}

ll n, m;


int main() {
    fast();
    cin>>n;
    cout<<(n*(n+1))/2;

}

Compiler output:
a.cc:24:2: error: stray '#' in program
   24 | }#include <bits/stdc++.h>
      |  ^
a.cc:24:3: error: 'include' does not name a type
   24 | }#include <bits/stdc++.h>
      |   ^~~~~~~
a.cc:33:6: error: redefinition of 'void fast()'
   33 | void fast() {
      |      ^~~~
a.cc:10:6: note: 'void fast()' previously defined here
   10 | void fast() {
      |      ^~~~
a.cc:39:4: error: redefinition of 'll n'
   39 | ll n, m;
      |    ^
a.cc:16:4: note: 'll n' previously declared here
   16 | ll n, m;
      |    ^
a.cc:39:7: error: redefinition of 'll m'
   39 | ll n, m;
      |       ^
a.cc:16:7: note: 'll m' previously declared here
   16 | ll n, m;
      |       ^
a.cc:42:5: error: redefinition of 'int main()'
   42 | int main() {
      |     ^~~~
a.cc:19:5: note: 'int main()' previously defined here
   19 | int main() {
      |     ^~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
  int n;
  cin>>n;
  cout<<(n*n(n+1))/2;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:13: error: 'n' cannot be used as a function
    6 |   cout<<(n*n(n+1))/2;
      |            ~^~~~~
Language: C++

#include <bits/stdc++.h>

int main(){
	int n; cin >> n;
  	cout << n*((n+1)/2) <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:16: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |         int n; 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:5:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    5 |         cout << n*((n+1)/2) <<endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:5:31: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    5 |         cout << n*((n+1)/2) <<endl;
      |                               ^~~~
      |                               std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

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

int main(){
  int n;
  cin>>n;
  cout<<n*(n+1)/2<,endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:19: error: expected primary-expression before ',' token
    7 |   cout<<n*(n+1)/2<,endl;
      |                   ^
Language: C++

 #include <iostream>
int n;
using namespace std;
int main(){
	cin >> n;
  cout <<n*(n+1)/2
}



Compiler output:
a.cc: In function 'int main()':
a.cc:6:19: error: expected ';' before '}' token
    6 |   cout <<n*(n+1)/2
      |                   ^
      |                   ;
    7 | }
      | ~
Language: C++

#include <iostream>
using namespace std ;

int main()
{
    int N ;
    cin >> N ;
    
    int i = 1 ;
    int sum = 0 ;
    while( i <= N ){
    sum += i ;
    i++;
    }

    cout << sum << \n ;

    return 0 ;
} 

Compiler output:
a.cc:16:20: error: stray '\' in program
   16 |     cout << sum << \n ;
      |                    ^
a.cc: In function 'int main()':
a.cc:16:21: error: 'n' was not declared in this scope
   16 |     cout << sum << \n ;
      |                     ^
Language: C++

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

using ll=long long;
const ll MOD=1000000007;

int main() {
  int N;
  cin N;
  cout << N*(N+1)/2 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:6: error: expected ';' before 'N'
    9 |   cin N;
      |      ^~
      |      ;
Language: C++

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

int main()
{
	int n;
  	cin >> n;
  
 	int sum = 0;
  	for (i=0; i<n; i++)
      sum += i+1;
  
  cout << sum << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:14: error: 'i' was not declared in this scope
   10 |         for (i=0; i<n; i++)
      |              ^
Language: C++

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

int main(){
  int N;
  cin >> N;
  cout << N(N+1) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'N' cannot be used as a function
    7 |   cout << N(N+1) << endl;
      |           ~^~~~~
Language: Java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

class Main {

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

		try {

			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

			int N = Integer.parseInt(br.readLine());

			int result = getSum(N);
			
		} catch (IOException | NumberFormatException e) {
			e.printStackTrace();
			System.exit(0);
		} catch (Exception e) {
			e.printStackTrace();
			System.exit(0);
		}

	}
	
	private int getSum(int N) {
		int sum = 0;
		for(int i = 1; i <= N; i++) {
			sum += i;
		}
		
		return sum;
	}
}

Compiler output:
Main.java:17: error: non-static method getSum(int) cannot be referenced from a static context
			int result = getSum(N);
			             ^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N:
  cin >> N;
  
  cout << (N*(N+1))/2 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:8: error: found ':' in nested-name-specifier, expected '::'
    5 |   int N:
      |        ^
      |        ::
a.cc:5:7: error: 'N' has not been declared
    5 |   int N:
      |       ^
a.cc:6:7: error: qualified-id in declaration before '>>' token
    6 |   cin >> N;
      |       ^~
a.cc:8:12: error: 'N' was not declared in this scope
    8 |   cout << (N*(N+1))/2 << endl;
      |            ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(int argc, char **argv){
    int n,ans;
    cin>>n;
    ans=n*(n+1))/2;
    printf("%d\n",ans);
    return 0;
}

Compiler output:
a.cc: In function 'int main(int, char**)':
a.cc:6:16: error: expected ';' before ')' token
    6 |     ans=n*(n+1))/2;
      |                ^
      |                ;
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(void){
    int n,ans;
    cin>>n;
    ans=n*(n+1))/2;
    printf("%d\n",ans);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:16: error: expected ';' before ')' token
    6 |     ans=n*(n+1))/2;
      |                ^
      |                ;
Language: C++

#include <iostream>
#include <string>

int main()
{
  std::str s;
  std::cin >> s;
  int i;
  std::str ans = "";
  for (i = 0; i < s.size(); i++) {
    if (s[i] == '0' || s[i] == '1') ans += s[i];
    if (s[i] == 'B') ans.pop_back;
  }
  std::cout << ans;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:8: error: 'str' is not a member of 'std'
    6 |   std::str s;
      |        ^~~
a.cc:7:15: error: 's' was not declared in this scope
    7 |   std::cin >> s;
      |               ^
a.cc:9:8: error: 'str' is not a member of 'std'
    9 |   std::str ans = "";
      |        ^~~
a.cc:11:37: error: 'ans' was not declared in this scope; did you mean 'abs'?
   11 |     if (s[i] == '0' || s[i] == '1') ans += s[i];
      |                                     ^~~
      |                                     abs
a.cc:12:22: error: 'ans' was not declared in this scope; did you mean 'abs'?
   12 |     if (s[i] == 'B') ans.pop_back;
      |                      ^~~
      |                      abs
a.cc:14:16: error: 'ans' was not declared in this scope; did you mean 'abs'?
   14 |   std::cout << ans;
      |                ^~~
      |                abs
Language: C++

#include <iostream>

int main()
{
  int N;
  std::cin >> N;
  std::out << (1+N)*N/2;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:8: error: 'out' is not a member of 'std'; did you mean 'oct'?
    7 |   std::out << (1+N)*N/2;
      |        ^~~
      |        oct
Language: C++

#include <bits/stdc++.h>
#define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
using namespace std;


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

   int n; cin >> n;
   int ans=0;
   rep(0,1,(n+1))ans+=i;
   cout << ans << endl;
}






Compiler output:
a.cc: In function 'int main()':
a.cc:12:8: error: expected unqualified-id before numeric constant
   12 |    rep(0,1,(n+1))ans+=i;
      |        ^
a.cc:2:28: note: in definition of macro 'rep'
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                            ^
a.cc:12:8: error: expected ';' before numeric constant
   12 |    rep(0,1,(n+1))ans+=i;
      |        ^
a.cc:2:28: note: in definition of macro 'rep'
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                            ^
a.cc:12:8: error: lvalue required as left operand of assignment
   12 |    rep(0,1,(n+1))ans+=i;
      |        ^
a.cc:2:28: note: in definition of macro 'rep'
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                            ^
a.cc:2:44: error: expected ')' before ';' token
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                       ~                    ^
a.cc:12:4: note: in expansion of macro 'rep'
   12 |    rep(0,1,(n+1))ans+=i;
      |    ^~~
a.cc:12:8: error: lvalue required as increment operand
   12 |    rep(0,1,(n+1))ans+=i;
      |        ^
a.cc:2:48: note: in definition of macro 'rep'
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                                                ^
Language: C++

#include <bits/stdc++.h>
#define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
using namespace std;


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

   int n; cin >> n;
   int ans=0;
   rep(0,1,(n+1) ans+=i;
   cout << ans << endl;
}






Compiler output:
a.cc:18:1: error: unterminated argument list invoking macro "rep"
   18 | 
      | ^
a.cc: In function 'int main()':
a.cc:12:4: error: 'rep' was not declared in this scope
   12 |    rep(0,1,(n+1) ans+=i;
      |    ^~~
a.cc:12:7: error: expected '}' at end of input
   12 |    rep(0,1,(n+1) ans+=i;
      |       ^
a.cc:6:11: note: to match this '{'
    6 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
#define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
using namespace std;


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

   int n; cin >> n;
   int ans=0;
   rep(0,1,n+1) ans+=i;
   cout << ans << endl;
}






Compiler output:
a.cc: In function 'int main()':
a.cc:12:8: error: expected unqualified-id before numeric constant
   12 |    rep(0,1,n+1) ans+=i;
      |        ^
a.cc:2:28: note: in definition of macro 'rep'
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                            ^
a.cc:12:8: error: expected ';' before numeric constant
   12 |    rep(0,1,n+1) ans+=i;
      |        ^
a.cc:2:28: note: in definition of macro 'rep'
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                            ^
a.cc:12:8: error: lvalue required as left operand of assignment
   12 |    rep(0,1,n+1) ans+=i;
      |        ^
a.cc:2:28: note: in definition of macro 'rep'
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                            ^
a.cc:2:44: error: expected ')' before ';' token
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                       ~                    ^
a.cc:12:4: note: in expansion of macro 'rep'
   12 |    rep(0,1,n+1) ans+=i;
      |    ^~~
a.cc:12:8: error: lvalue required as increment operand
   12 |    rep(0,1,n+1) ans+=i;
      |        ^
a.cc:2:48: note: in definition of macro 'rep'
    2 | #define rep(i,a,b) for(int i=a; i< (int)(b); ++i)
      |                                                ^
Language: C

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

#define MAX(a,b) (a > b) ? a : b
#define MIN(a,b) (a < b) ? a : b
const int inf = 1000000000; // 10^9
int c(int n){
  int m;
  if (n == 0)
    return 1;    // 0! = 1
  m = c(n - 1);
  printf("%d")
  return n + m;
}
int main(){
   int n;scanf("%d",&n);
   int ans = c(n);
   printf("%d",&ans);
   return 0;
}

Compiler output:
main.c: In function 'c':
main.c:13:15: error: expected ';' before 'return'
   13 |   printf("%d")
      |               ^
      |               ;
   14 |   return n + m;
      |   ~~~~~~
Language: C

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

#define MAX(a,b) (a > b) ? a : b
#define MIN(a,b) (a < b) ? a : b
const int inf = 1000000000; // 10^9
int c(int x){
   int y
   if(x == 0)return 1;
   y = c(x - 1);
   return x + y;
}
int main(){
   int n;scanf("%d",&n);
   c(n);
   printf("%d",&n);
   return 0;
}

Compiler output:
main.c: In function 'c':
main.c:10:4: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'if'
   10 |    if(x == 0)return 1;
      |    ^~
main.c:11:4: error: 'y' undeclared (first use in this function)
   11 |    y = c(x - 1);
      |    ^
main.c:11:4: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef vector<ll> vl;
typedef pair<ll, ll> PP;
#define rep(i, n) for(ll i = 0; i < ll(n); i++)
#define all(v) v.begin(), v.end()
bool chmin(ll & a, ll  b) { if (b < a) { a = b; return 1; } return 0; }
bool chmax(ll & a, ll b) { if (b > a) { a = b; return 1; } return 0; }
const ll INF = 999999999999999;
const ll MOD = 1000000007;
const ll MAX_N=500010;
ll a, b, c, d, e, f, p, t, x, y, z, q, m, n, r, h, k, w, l, ans;
gragh
int main() {
    cin>>n;
    cout<<n*(n+1)/2<<endl;
}

Compiler output:
a.cc:14:1: error: 'gragh' does not name a type
   14 | gragh
      | ^~~~~
Language: C

#include<stdio.h>
 
int main(void){
  double n;
  int c;
  scanf("%f", &n);
  c = (1+n)/2*n;
  print(c);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:3: error: implicit declaration of function 'print'; did you mean 'printf'? [-Wimplicit-function-declaration]
    8 |   print(c);
      |   ^~~~~
      |   printf
Language: C++

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

int main(){
	int N;
    cin >> N;
    int ans = N * (N + 1) / 2;
    cout << ans << endl;
	return 0;
}


Compiler output:
a.cc:4:11: error: two or more data types in declaration of 'type name'
    4 | using P = pair<int,int>
      |           ^~~~~~~~~~~~~
Language: C++

#include <iostream>
using namespace std;
void main() {
  	cin.tie(0);
	ios::sync_with_stdio(false);
  	int x;
  	cin >> x;
  	cout << (1 + x) * x / 2 << "\n";
}

Compiler output:
a.cc:3:1: error: '::main' must return 'int'
    3 | void main() {
      | ^~~~
Language: C++

#include <iostream>
using namespace std;
void main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  int x;
  cin >> x;
  cout << (1 + x) * x / 2 << "\n";
}

Compiler output:
a.cc:3:1: error: '::main' must return 'int'
    3 | void main() {
      | ^~~~
Language: C++

#include <iostream>
using namespace std;
int main(){
    int n;
    scanf("%d",&n);
    printf("%d",n*(n+1)/2)
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:27: error: expected ';' before '}' token
    6 |     printf("%d",n*(n+1)/2)
      |                           ^
      |                           ;
    7 | }
      | ~
Language: Java


import java.util.Scanner;

public class MAIN {

	public static void main(String[] args) {
		Scanner input = new Scanner (System.in);
		
		int angka = input.nextInt();
		
		int sum = 0;
		
		for (int a=1;a<=angka;a++){
			sum+=a;
		}
		
		System.out.println(sum);

	}

}


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: Java

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

Compiler output:
Main.java:6: error: cannot find symbol
    System.out.println( a(a+1)/2 );
                        ^
  symbol:   method a(int)
  location: class Main
1 error
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <map>

using namespace std;

int main() {
	int N;
	cin >> N;
	cout << (N + 1) * N / 2; << endl;

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:34: error: expected primary-expression before '<<' token
   12 |         cout << (N + 1) * N / 2; << endl;
      |                                  ^~
Language: Java

public class ABC043A {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt(), sum = 0;
        
        for (int i = 0; i < N; i++) {
            sum += i;
        }

        System.out.println(sum);

        sc.close();
    }
}

Compiler output:
Main.java:1: error: class ABC043A is public, should be declared in a file named ABC043A.java
public class ABC043A {
       ^
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class ABC043A
Main.java:4: error: cannot find symbol
        Scanner sc = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class ABC043A
3 errors
Language: C++

#include<iostream>
int main(){
int n;
std::cin>>n;
std::cout<<n*(n+1)/2<<endl;}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:23: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    5 | std::cout<<n*(n+1)/2<<endl;}
      |                       ^~~~
      |                       std::endl
In file included from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  cin>>N;
  cout<<N*(N+1)/2<<endl;
}

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

#include <bits/stdc++.h>

using namespace std;

int main(void) {
  int N; cin >> N;
  cout << N(N+1)/2 << endl;

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'N' cannot be used as a function
    7 |   cout << N(N+1)/2 << endl;
      |           ~^~~~~
Language: C

#include<stdio.h>
int main(){
	int i=0;
	int j=0;
    int sum=0;
	scanf("%d",&i);
    for(j=1;j<i+1;j++){
    	sum = sum+1;
        }
        printf("%d",sum);
        return 0;

Compiler output:
main.c: In function 'main':
main.c:11:9: error: expected declaration or statement at end of input
   11 |         return 0;
      |         ^~~~~~
Language: C

include<stdio.h>
int main(){
	int i=0;
	int j=0;
    int sum=0;
	scanf("%d",&i);
    for(j=1;j<i+1;j++){
    	sum = sum+1;
        }
        printf("%d",sum);
        return 0;

Compiler output:
main.c:1:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include<stdio.h>
      |        ^
Language: C++

#include <bits/std++.h>

using namespace std;
int main(){
	int x;
  	cin >> x;
  	cout << (x*(x+1))/2;
	return 0;
}


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

#include <bits/std++.h>

using namespace std;
int main(){
	int x;
  	cin >> x;
  	cout >> (x*(x+1))/2;
	return 0;
}

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

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

int main() {
  int i = 0 ;
  int N;
  cin >> N;
  int a;
  for (i = 0 ; i < N; i++){
    a += N;
  }
}
  cout<<a;


Compiler output:
a.cc:13:3: error: 'cout' does not name a type
   13 |   cout<<a;
      |   ^~~~
Language: C++

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

int main() {
  int i = 0 ;
  int N;
  cin >> N;
  int a;
  for (i = 0 ; i < N; i++;){
    a += N;
  }
}
  cout<<a;


Compiler output:
a.cc: In function 'int main()':
a.cc:9:26: error: expected ')' before ';' token
    9 |   for (i = 0 ; i < N; i++;){
      |       ~                  ^
      |                          )
a.cc:9:27: error: expected primary-expression before ')' token
    9 |   for (i = 0 ; i < N; i++;){
      |                           ^
a.cc: At global scope:
a.cc:13:3: error: 'cout' does not name a type
   13 |   cout<<a;
      |   ^~~~
Language: C++

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

int main() {
  int i = 0 ;
  cin >> N;
  int a;
  for (i = 0 ; i < N; i++;){
    a += N;
  }
}
  cout<<a;

Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: 'N' was not declared in this scope
    6 |   cin >> N;
      |          ^
a.cc:8:26: error: expected ')' before ';' token
    8 |   for (i = 0 ; i < N; i++;){
      |       ~                  ^
      |                          )
a.cc:8:27: error: expected primary-expression before ')' token
    8 |   for (i = 0 ; i < N; i++;){
      |                           ^
a.cc: At global scope:
a.cc:12:3: error: 'cout' does not name a type
   12 |   cout<<a;
      |   ^~~~
Language: C++

// ========================================================================================================
// Library
// ========================================================================================================
#define _CRT_SECURE_NO_WARNINGS

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

// competitive macro
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define RFOR(i, a, b) for (int i = (b) - 1; i >= (a); i--)
#define REP(i, n) for (int i = 0; i < (n); i++)
#define RREP(i ,n) for (int i = (n) - 1; i >= 0; i--)
#define LL long long
#define ULL unsigned long long

void fastIOS()
{
	cin.tie(0);
	ios::sync_with_stdio(false);
}
// ========================================================================================================
// ========================================================================================================

int main()
{
	fastIOS();

	int n; cin >> n;

    cout << (n(n+1))/2;
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:15: error: 'n' cannot be used as a function
   31 |     cout << (n(n+1))/2;
      |              ~^~~~~
Language: C

#include <stdio.h>
int main(void){
	int a,b;
  scanf("%d",&a);
  for(i=0;i<a;i++){
	  b+=i;
  }
}

Compiler output:
main.c: In function 'main':
main.c:5:7: error: 'i' undeclared (first use in this function)
    5 |   for(i=0;i<a;i++){
      |       ^
main.c:5:7: note: each undeclared identifier is reported only once for each function it appears in
Language: Java

import java.util.*;
class Main{
	public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
      	String str = scan.next();
      	
      	List<String> list = new ArrayList<>();
      	int j = 0;
      	for(int i = 0; i < str.length(); i++){
        	if(!(str.charAt(i) == 'B')){
              	Syring input = String.valueOf(str.charAt(i));
            	list.add(input);
              	j = j + 1;
            }else if (!(j == 0)){
            	list.remove(j - 1);
            }
        }
      	
      	for(int k = 0; k<j; k++){
          	char out = list.get(k);
        	System.out.print(out);
        }
    }
}

Compiler output:
Main.java:11: error: cannot find symbol
              	Syring input = String.valueOf(str.charAt(i));
              	^
  symbol:   class Syring
  location: class Main
Main.java:20: error: incompatible types: String cannot be converted to char
          	char out = list.get(k);
          	                   ^
2 errors
Language: Java

import java.util.*;
class Main{
	public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
      	String str = scan.next();
      	
      	List<char> list = new ArrayList<>();
      	int j = 0;
      	for(int i = 0; i < str.length(); i++){
        	if(!(str.charAt(i) == 'B')){
            	list.add(str.charAt(i));
              	j = j + 1;
            }else if (!(j == 0)){
            	list.remove(j - 1);
            }
        }
      	
      	for(int k = 0; k<j; k++){
          	char out = list.get(k);
        	System.out.print(out);
        }
    }
}

Compiler output:
Main.java:7: error: unexpected type
      	List<char> list = new ArrayList<>();
      	     ^
  required: reference
  found:    char
1 error
Language: Java

import java.util.*;
class Main{
	public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
      	String str = scan.next();
      	
      	ArrayList< character > list = new ArrayList<>();
      	int j = 0;
      	for(int i = 0; i < str.length(); i++){
        	if(!(str.charAt(i) == 'B')){
            	list.add(str.charAt(i));
              	j = j + 1;
            }else if (!(j == 0)){
            	list.remove(j - 1);
            }
        }
      	
      	for(int k = 0; k<j; i++){
          	char out = list.get(k);
        	System.out.print(out);
        }
    }
}

Compiler output:
Main.java:7: error: cannot find symbol
      	ArrayList< character > list = new ArrayList<>();
      	           ^
  symbol:   class character
  location: class Main
Main.java:18: error: cannot find symbol
      	for(int k = 0; k<j; i++){
      	                    ^
  symbol:   variable i
  location: class Main
2 errors
Language: Java

import java.util.*;
class Main{
	public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
      	String str = scan.next();
      	
      	ArrayList<char> list = new ArrayList<>();
      	int j = 0;
      	for(int i = 0; i < str.length(); i++){
        	if(!(str.charAt(i) == 'B')){
            	list.add(str.charAt(i));
              	j = j + 1;
            }else if (!(j == 0)){
            	list.remove(j - 1);
            }
        }
    }
}

Compiler output:
Main.java:7: error: unexpected type
      	ArrayList<char> list = new ArrayList<>();
      	          ^
  required: reference
  found:    char
1 error
Language: Java

import java.util.*;
class Main{
	public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
      	String str = scan.next();
      	
      	ArrayList<String> list = new ArrayList<>();
      	int j = 0;
      	for(int i = 0; i < str.length(); i++){
        	if(!(str.charAt(i) == B)){
            	list.add(str.charAt(i));
              	j = j + 1;
            }else if (!(j == 0)){
            	list.remove(j - 1);
            }
        }
    }
}

Compiler output:
Main.java:10: error: cannot find symbol
        	if(!(str.charAt(i) == B)){
        	                      ^
  symbol:   variable B
  location: class Main
Main.java:11: error: incompatible types: char cannot be converted to String
            	list.add(str.charAt(i));
            	                   ^
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
2 errors
Language: Java

import java.util.*
class Main{
	public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
        String str = scan.next();
        int N = Integer.parseInt(str);
        
        int ans = (1 + N)*N/2;
        System.out.println(ans);
    }
}

Compiler output:
Main.java:1: error: ';' expected
import java.util.*
                  ^
1 error
Language: C++

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

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

Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: 'N' cannot be used as a function
    6 |   cout<<N(N+1)/2<<endl;
      |         ~^~~~~
Language: C++

#include <iostream>
#include <iomanip>
#include <vector>
#include <utility>
#include <map>
#include <algorithm>
#include <queue>
#include <cmath>
#include <numeric>

using namespace std;
struct aaa{aaa(){cin.tie(nullptr); ios::sync_with_stdio(false); cout<<fixed<<setprecision(20);};}aaa;
template <class T>ostream &operator<<(ostream &o,const vector<T>&v){o<<"{";for(int i=0;i<(int)v.size();i++)o<<(i>0?", ":"")<<v[i];o<<"}";return o;}
#define debug(v) {cout<<"\033[1;36m[debug]\033[m "<<#v<<" : "<<v<<endl;}

typedef long long int64;


int main() {
    int n;
    cin >> n;
    cout << n*(n+1)/2 << endl;1
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:22:32: error: expected ';' before '}' token
   22 |     cout << n*(n+1)/2 << endl;1
      |                                ^
      |                                ;
   23 | 
   24 | }
      | ~
Language: C++

#include<iostream>
using namepsace std;
int main(){
  
  int n;
  cin>>n;
  cout<<(n*(n+1))/2;
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namepsace'
    2 | using namepsace std;
      |       ^~~~~~~~~
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 a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   cout<<(n*(n+1))/2;
      |   ^~~~
      |   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>

int main(){
    int n;
    int sum;
    sum = n * (n + 1) / 2;
    cout << sum << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |     cout << sum << endl;
      |     ^~~~
      |     std::cout
In file included from a.cc:1:
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:20: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |     cout << sum << endl;
      |                    ^~~~
      |                    std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <iostream>

int main(){
    int n;
    int sum;
    sum = n * (n + 1) / 2;
    cout << sum << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |     cout << sum << endl;
      |     ^~~~
      |     std::cout
In file included from a.cc:1:
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:20: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |     cout << sum << endl;
      |                    ^~~~
      |                    std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#inlclude<bits/stdc++.h>
using namespace std;
int main(){
	int n;cin>>n;
	int sum = 0;
  	for(int i=1; i<=n; i++) sum+=i;
 	cout<<sum<<endl;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inlclude; did you mean #include?
    1 | #inlclude<bits/stdc++.h>
      |  ^~~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:4:15: error: 'cin' was not declared in this scope
    4 |         int n;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 | #inlclude<bits/stdc++.h>
a.cc:7:9: error: 'cout' was not declared in this scope
    7 |         cout<<sum<<endl;
      |         ^~~~
a.cc:7:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:20: error: 'endl' was not declared in this scope
    7 |         cout<<sum<<endl;
      |                    ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #inlclude<bits/stdc++.h>
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin >> n;
  int a=0;
  for(int i=1;i<=n;i++){
    a=a+i
  }
  cout <<a;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:10: error: expected ';' before '}' token
    8 |     a=a+i
      |          ^
      |          ;
    9 |   }
      |   ~
Language: C

#include <stdio.h>
int main(void){
    int sum=0,max;
    scanf("%d",&max);
    for(counter=1;counter<=max;counter++){
		sum+=counter;
	}
	printf("%d",&sum);
    return 0;
	}

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

package ProblemSolve;

import java.util.Scanner;


public class Problem1 {

    public static void main(String[] args) {

        int n, sum = 0;

        Scanner input = new Scanner(System.in);

        n = input.nextInt();

        if (n >= 1 && n <= 100) {

            for (int i = 1; i <= n; i++) {

                sum = sum + i;
            }

            System.out.println(sum);
        }

    }

  }



Compiler output:
Main.java:6: error: class Problem1 is public, should be declared in a file named Problem1.java
public class Problem1 {
       ^
1 error