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

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		if (a < b) {
			System.out.println("a < b");
		} else if (a > b) {
			System.out.println("a > b");
		} else {
			System.out.println("a == b");
		}
	}
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.Scanner;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:1: error: expected unqualified-id before 'public'
    3 | public class Main {
      | ^~~~~~
Language: C++

#include<stdio.h>
int main(){
int a,b,c;
scanf("%d%d%d",&a,&b,&c);
if(a<b&&b<c)printf("Yes\n");
elseprintf("no\n");
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:1: error: 'elseprintf' was not declared in this scope; did you mean 'vsprintf'?
    6 | elseprintf("no\n");
      | ^~~~~~~~~~
      | vsprintf
Language: C++

#include <stdio.h>
int main()
{
  int a,b;
  scanf("%d,%d",&a,&b);
  if("a<b")
    {
      print("a<b");
	}
  if("a>b")
    {
      print("b>a");
    }
  if("a==b")
    {
      print("a==b");
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'print' was not declared in this scope; did you mean 'printf'?
    8 |       print("a<b");
      |       ^~~~~
      |       printf
a.cc:12:7: error: 'print' was not declared in this scope; did you mean 'printf'?
   12 |       print("b>a");
      |       ^~~~~
      |       printf
a.cc:16:7: error: 'print' was not declared in this scope; did you mean 'printf'?
   16 |       print("a==b");
      |       ^~~~~
      |       printf
Language: C++

#include <stdio.h>
int main()
{
  int a,b;
  scanf("%d,%d",&a,&b);
  if(a<b)
    {
      print("a<b");
	}
  if(a>b)
    {
      print("b>a");
    }
  if(a==b)
    {
      print("a==b");
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'print' was not declared in this scope; did you mean 'printf'?
    8 |       print("a<b");
      |       ^~~~~
      |       printf
a.cc:12:7: error: 'print' was not declared in this scope; did you mean 'printf'?
   12 |       print("b>a");
      |       ^~~~~
      |       printf
a.cc:16:7: error: 'print' was not declared in this scope; did you mean 'printf'?
   16 |       print("a==b");
      |       ^~~~~
      |       printf
Language: C++

#include <stdio.h>
int main()
{
  int a,b;
  scanf("%d,%d",&a,&b);
  if(a<b)
    {
      print("a<b");
	}
  if(a>b)
    {
      print("b>a");
    }
  if(a==b)
    {
      print("a==b");
	}
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'print' was not declared in this scope; did you mean 'printf'?
    8 |       print("a<b");
      |       ^~~~~
      |       printf
a.cc:12:7: error: 'print' was not declared in this scope; did you mean 'printf'?
   12 |       print("b>a");
      |       ^~~~~
      |       printf
a.cc:16:7: error: 'print' was not declared in this scope; did you mean 'printf'?
   16 |       print("a==b");
      |       ^~~~~
      |       printf
Language: C++

#include <stdio.h>
int main()
{
  int a,b;
  scanf("%d,%d",&a,&b);
  if(a<b)
    {
      print("a < b");
	}
  if(a>b)
    {
      print("b > a");
    }
  if(a==b)
    {
      print("a == b");
	}
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: 'print' was not declared in this scope; did you mean 'printf'?
    8 |       print("a < b");
      |       ^~~~~
      |       printf
a.cc:12:7: error: 'print' was not declared in this scope; did you mean 'printf'?
   12 |       print("b > a");
      |       ^~~~~
      |       printf
a.cc:16:7: error: 'print' was not declared in this scope; did you mean 'printf'?
   16 |       print("a == b");
      |       ^~~~~
      |       printf
Language: C++

#include <iostream>
using namespace std;

int main(){
	int a,b;

	cin >> a >> b;
	
	if (a < b){
		cout << "a < b" << endl;
	}
	else if (a > b){
		cout << "a > b" << endl;
	}
	else{
		cout "a == b" << endl;
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:21: error: expected ';' before string constant
   16 |                 cout "a == b" << endl;
      |                     ^~~~~~~~~
      |                     ;
Language: C++

using namespace std;

int main() {
	int a, b;
	cin >> a >> b;
	if (a == b)cout << "a==b" << "\n";
	else if (a < b)cout << "a<b" << "\n";
	else cout << "a>b" << "\n";

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'cin' was not declared in this scope
    5 |         cin >> a >> b;
      |         ^~~
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:6:20: error: 'cout' was not declared in this scope
    6 |         if (a == b)cout << "a==b" << "\n";
      |                    ^~~~
a.cc:6:20: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:24: error: 'cout' was not declared in this scope
    7 |         else if (a < b)cout << "a<b" << "\n";
      |                        ^~~~
a.cc:7:24: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:8:14: error: 'cout' was not declared in this scope
    8 |         else cout << "a>b" << "\n";
      |              ^~~~
a.cc:8:14: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

a=gets.to_i
b=gets.to_i
if a>b then
  puts("a > b")
elsif a==b then
  puts("a = b")
else then
  puts("a < b")
end

Compiler output:
a.cc:1:1: error: 'a' does not name a type
    1 | a=gets.to_i
      | ^
Language: C++

a=gets.to_i
b=gets.to_i
if a>b then
  puts("a > b")
elsif a==b then
  puts("a = b")
else
  puts("a < b")
end

Compiler output:
a.cc:1:1: error: 'a' does not name a type
    1 | a=gets.to_i
      | ^
Language: C++

#include <iostream>
using namespace std;

int main(){
int a,b;
char c[10]
cin >> a;
cin >> b;
if(a<b)
	c[10] = "a < b";
if(a>b)
	c[10] = "a > b";
if(a == b)
	c[10] = "a == b";
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:1: error: expected initializer before 'cin'
    7 | cin >> a;
      | ^~~
a.cc:10:9: error: 'c' was not declared in this scope
   10 |         c[10] = "a < b";
      |         ^
a.cc:12:9: error: 'c' was not declared in this scope
   12 |         c[10] = "a > b";
      |         ^
a.cc:14:9: error: 'c' was not declared in this scope
   14 |         c[10] = "a == b";
      |         ^
Language: C++

#include <iostream>
using namespace std;

int main(){
int a,b;
char c[10];
cin >> a;
cin >> b;
if(a<b)
	c[10] = "a < b";
if(a>b)
	c[10] = "a > b";
if(a == b)
	c[10] = "a == b";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:17: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
   10 |         c[10] = "a < b";
      |                 ^~~~~~~
      |                 |
      |                 const char*
a.cc:12:17: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
   12 |         c[10] = "a > b";
      |                 ^~~~~~~
      |                 |
      |                 const char*
a.cc:14:17: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
   14 |         c[10] = "a == b";
      |                 ^~~~~~~~
      |                 |
      |                 const char*
Language: C++

#include <iostream>
using namespace std;

int main(){
int a,b;
char c[10];
cin >> a;
cin >> b;
if(a<b)
	c = "a < b";
if(a>b)
	c = "a > b";
if(a == b)
	c = "a == b";
cout << c << endl;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:11: error: incompatible types in assignment of 'const char [6]' to 'char [10]'
   10 |         c = "a < b";
      |         ~~^~~~~~~~~
a.cc:12:11: error: incompatible types in assignment of 'const char [6]' to 'char [10]'
   12 |         c = "a > b";
      |         ~~^~~~~~~~~
a.cc:14:11: error: incompatible types in assignment of 'const char [7]' to 'char [10]'
   14 |         c = "a == b";
      |         ~~^~~~~~~~~~
Language: C++

#include <iostream>
using namespace std;

int main(){
int a,b;
char c[];
cin >> a;
cin >> b;
if(a<b)
	c = "a < b";
if(a>b)
	c = "a > b";
if(a == b)
	c = "a == b";
cout << c << endl;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:6: error: storage size of 'c' isn't known
    6 | char c[];
      |      ^
Language: C++

#include<stdio.h>
int main(){
  int a,b;
  if(a<b){
    printf("a<b\n");
    if(a>b){
      printf("a>b\n");
      if(a==b){
	printf("a==b\n");
	return(0);
      }

Compiler output:
a.cc: In function 'int main()':
a.cc:11:8: error: expected '}' at end of input
   11 |       }
      |        ^
a.cc:6:12: note: to match this '{'
    6 |     if(a>b){
      |            ^
a.cc:11:8: error: expected '}' at end of input
   11 |       }
      |        ^
a.cc:4:10: note: to match this '{'
    4 |   if(a<b){
      |          ^
a.cc:11:8: error: expected '}' at end of input
   11 |       }
      |        ^
a.cc:2:11: note: to match this '{'
    2 | int main(){
      |           ^
Language: C++

#include<stdio.h>
int main(){
  int a,b;
  scanf("%d %d",&a,&b);
  if(a<b){
    printf("a<b\n");
    if(a>b){
      printf("a>b\n");
      if(a==b){
	printf("a==b\n");
	return(0);
      }

Compiler output:
a.cc: In function 'int main()':
a.cc:12:8: error: expected '}' at end of input
   12 |       }
      |        ^
a.cc:7:12: note: to match this '{'
    7 |     if(a>b){
      |            ^
a.cc:12:8: error: expected '}' at end of input
   12 |       }
      |        ^
a.cc:5:10: note: to match this '{'
    5 |   if(a<b){
      |          ^
a.cc:12:8: error: expected '}' at end of input
   12 |       }
      |        ^
a.cc:2:11: note: to match this '{'
    2 | int main(){
      |           ^
Language: C++

#include<stdio.h>
int main(){
  int a,b;
  scanf("%d %d",&a,&b);
  if(a<b){
    printf("a<b\n");
    else(a>b){
      printf("a>b\n");
      else(a==b){
	printf("a==b\n");
	return(0);
      }

Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: expected '}' before 'else'
    7 |     else(a>b){
      |     ^~~~
a.cc:5:10: note: to match this '{'
    5 |   if(a<b){
      |          ^
a.cc:7:14: error: expected ';' before '{' token
    7 |     else(a>b){
      |              ^
      |              ;
a.cc:12:8: error: expected '}' at end of input
   12 |       }
      |        ^
a.cc:2:11: note: to match this '{'
    2 | int main(){
      |           ^
Language: C++

#include<stdio.h>
int main(){
  int a,b;
  scanf("%d %d",&a,&b);
  if(a<b){
    printf("a<b\n");
  }
    else(a>b){
      printf("a>b\n");
    }
      else(a==b){
	printf("a==b\n");
      }
	return(0);
      }

Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: expected ';' before '{' token
    8 |     else(a>b){
      |              ^
      |              ;
a.cc:11:7: error: 'else' without a previous 'if'
   11 |       else(a==b){
      |       ^~~~
a.cc:11:17: error: expected ';' before '{' token
   11 |       else(a==b){
      |                 ^
      |                 ;
Language: C++

x, y = map(int,raw_input().split())
if(x>y):
    print "a > b"
elif(x<y):
    print "a < b"
else:
    print "a == b"

Compiler output:
a.cc:1:1: error: 'x' does not name a type
    1 | x, y = map(int,raw_input().split())
      | ^
Language: C++

#include<stdio.h>
using namespace std;

int main() {
    int a, b;

    a = scanf();
    b = scanf();

    if (a < b) printf("a < b");
    else if ( a > b ) prinf("a > b");
    else printf( a == b) prinf("a == b);

    return 0;
}

Compiler output:
a.cc:12:32: warning: missing terminating " character
   12 |     else printf( a == b) prinf("a == b);
      |                                ^
a.cc:12:32: error: missing terminating " character
   12 |     else printf( a == b) prinf("a == b);
      |                                ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:7:14: error: too few arguments to function 'int scanf(const char*, ...)'
    7 |     a = scanf();
      |         ~~~~~^~
In file included from /usr/include/features.h:523,
                 from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33,
                 from /usr/include/stdio.h:28,
                 from a.cc:1:
/usr/include/stdio.h:445:12: note: declared here
  445 | extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
      |            ^~~~~~~~~~
a.cc:8:14: error: too few arguments to function 'int scanf(const char*, ...)'
    8 |     b = scanf();
      |         ~~~~~^~
/usr/include/stdio.h:445:12: note: declared here
  445 | extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
      |            ^~~~~~~~~~
a.cc:11:23: error: 'prinf' was not declared in this scope; did you mean 'printf'?
   11 |     else if ( a > b ) prinf("a > b");
      |                       ^~~~~
      |                       printf
a.cc:12:20: error: cannot convert 'bool' to 'const char*'
   12 |     else printf( a == b) prinf("a == b);
      |                  ~~^~~~
      |                    |
      |                    bool
/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>
using namespace stdin;

int main() {
    int a, b;

    a = scanf();
    b = scanf();

    if (a < b) printf("a < b");
    else if ( a > b ) prinf("a > b");
    else printf( a == b) prinf("a == b);

    return 0;
}

Compiler output:
a.cc:12:32: warning: missing terminating " character
   12 |     else printf( a == b) prinf("a == b);
      |                                ^
a.cc:12:32: error: missing terminating " character
   12 |     else printf( a == b) prinf("a == b);
      |                                ^~~~~~~~~
In file included from a.cc:1:
a.cc:2:17: error: 'stdin' is not a namespace-name
    2 | using namespace stdin;
      |                 ^~~~~
a.cc: In function 'int main()':
a.cc:7:14: error: too few arguments to function 'int scanf(const char*, ...)'
    7 |     a = scanf();
      |         ~~~~~^~
In file included from /usr/include/features.h:523,
                 from /usr/include/x86_64-linux-gnu/bits/libc-header-start.h:33,
                 from /usr/include/stdio.h:28:
/usr/include/stdio.h:445:12: note: declared here
  445 | extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
      |            ^~~~~~~~~~
a.cc:8:14: error: too few arguments to function 'int scanf(const char*, ...)'
    8 |     b = scanf();
      |         ~~~~~^~
/usr/include/stdio.h:445:12: note: declared here
  445 | extern int __REDIRECT (scanf, (const char *__restrict __format, ...),
      |            ^~~~~~~~~~
a.cc:11:23: error: 'prinf' was not declared in this scope; did you mean 'printf'?
   11 |     else if ( a > b ) prinf("a > b");
      |                       ^~~~~
      |                       printf
a.cc:12:20: error: cannot convert 'bool' to 'const char*'
   12 |     else printf( a == b) prinf("a == b);
      |                  ~~^~~~
      |                    |
      |                    bool
/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 <iostream>
using namespace std;
	int main(){
		int a,b,<,;
		cin >> a >> b;
		if ( a > b )
			cout << " a > b " << endl;
		if ( a < b ) 
			cout << " a < b " << endl;
		if  ( a == b ) 
			cout << " a == b " << endl;

	}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:25: error: expected unqualified-id before '<' token
    4 |                 int a,b,<,;
      |                         ^
Language: C++

#include <iostream.h>
using namespace std;
	int main(){
		int a,b;
		cin >> a >> b;
		if(a < b){
			cout << " a < b " << \n;
		}
		else if(a > b){
			 cout << " a > b "<< \n;
		}
		else if(a == b){
			 cout << " a == b "<< \n;
		}
		return 0;
	}

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

#include <iostream>
using namespace std;

int main(){
	int a,b;
	
	cin >>a;
	cin >>b;
	if(a<b)
		cout<<"a<b"<<endl;
	else if(a>b)
		cout<<"a>b"<<endl;
	else (a==b)
		cout<<"a=b"<<endl;
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:20: error: expected ';' before 'cout'
   13 |         else (a==b)
      |                    ^
      |                    ;
   14 |                 cout<<"a=b"<<endl;
      |                 ~~~~
Language: C++

int main(void)


{


int a, b;


scanf("%d %d", &a, &b);


if(a < b)


{


printf("%d < %d\n", a, b);


}


else if (a > b)


{


printf("%d > %d\n", a, b);


}


else


{


printf("%d == %d", a, b);


}


return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:1: error: 'scanf' was not declared in this scope
   10 | scanf("%d %d", &a, &b);
      | ^~~~~
a.cc:19:1: error: 'printf' was not declared in this scope
   19 | printf("%d < %d\n", a, b);
      | ^~~~~~
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)
a.cc:31:1: error: 'printf' was not declared in this scope
   31 | printf("%d > %d\n", a, b);
      | ^~~~~~
a.cc:31:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
a.cc:43:1: error: 'printf' was not declared in this scope
   43 | printf("%d == %d", a, b);
      | ^~~~~~
a.cc:43:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
Language: C++

#include <stdio.h>
int main(void)
{
  int a,b;
  scanf("%d %d",&a,&b);
  if(a > b){
    printf("a>b\n")
  };
  else{
    if(a == b){
      printf("a==b\n")
    };
    else{
      printf("a<b\n")
    };
  };
  return 0;
};

Compiler output:
a.cc: In function 'int main()':
a.cc:7:20: error: expected ';' before '}' token
    7 |     printf("a>b\n")
      |                    ^
      |                    ;
    8 |   };
      |   ~                 
a.cc:9:3: error: 'else' without a previous 'if'
    9 |   else{
      |   ^~~~
a.cc:11:23: error: expected ';' before '}' token
   11 |       printf("a==b\n")
      |                       ^
      |                       ;
   12 |     };
      |     ~                  
a.cc:13:5: error: 'else' without a previous 'if'
   13 |     else{
      |     ^~~~
a.cc:14:22: error: expected ';' before '}' token
   14 |       printf("a<b\n")
      |                      ^
      |                      ;
   15 |     };
      |     ~
Language: C++

#include<stdio.h>
int main(void){
int a,b;
scanf("%d %d",&a,&b);
if(a<b){
printf("a<b\n");
}
else{
printf("a>b\n");
}
else{
printf("a==b\n");
}
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:1: error: 'else' without a previous 'if'
   11 | else{
      | ^~~~
Language: C++

#include <stdio.h>
int main(void)
{
  int a,b;
  scanf("%d %d",&a,&b);
  if(a > b){
    printf("a>b\n");
  };
  else{
    if(a == b){
      printf("a==b\n");
    };
    else{
      printf("a<b\n");
    };
  };
  return 0;
};

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'else' without a previous 'if'
    9 |   else{
      |   ^~~~
a.cc:13:5: error: 'else' without a previous 'if'
   13 |     else{
      |     ^~~~
Language: C++

#include <stdio.h>
int main()
{
  int a,b;
  scanf("%d %d",&a,&b);
  if(a > b){
    printf("a>b\n");
  };
  else{
    if(a == b){
      printf("a==b\n");
    };
    else{
      printf("a<b\n");
    };
  };
  return 0;
};

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'else' without a previous 'if'
    9 |   else{
      |   ^~~~
a.cc:13:5: error: 'else' without a previous 'if'
   13 |     else{
      |     ^~~~
Language: C++

#include <stdio.h> int main(void){     int a,b;     scanf("%d %d",&a,&b);     if(a<b){        printf("a < b\n");        }     if(a>b){       printf("a > b\n");       }     if(a==b){       printf("a == b\n");       }return 0; }

Compiler output:
a.cc:1:20: warning: extra tokens at end of #include directive
    1 | #include <stdio.h> int main(void){     int a,b;     scanf("%d %d",&a,&b);     if(a<b){        printf("a < b\n");        }     if(a>b){       printf("a > b\n");       }     if(a==b){       printf("a == b\n");       }return 0; }
      |                    ^~~
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include <stdio.h> int main(void){     int a,b;     scanf("%d %d",&a,&b);     if(a<b){        printf("a < b\n");        }     if(a>b){       printf("a > b\n");       }     if(a==b){       printf("a == b\n");       }}

Compiler output:
a.cc:1:20: warning: extra tokens at end of #include directive
    1 | #include <stdio.h> int main(void){     int a,b;     scanf("%d %d",&a,&b);     if(a<b){        printf("a < b\n");        }     if(a>b){       printf("a > b\n");       }     if(a==b){       printf("a == b\n");       }}
      |                    ^~~
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include <iostream>

using namespace std;

int naim(){

	int a,b;

	cin >> a;
	cin >> b;

	if (a==b){
		cout << a << " == " << b << endl;
	}

	if(a<b){
		cout << a << " < " << b << endl;
	}

	if(a>b){
		cout << a << " > " << b << endl;
	}
}

Compiler output:
a.cc: In function 'int naim()':
a.cc:23:1: warning: no return statement in function returning non-void [-Wreturn-type]
   23 | }
      | ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include <iostream>

using namespace std;

int naim(){

	int a,b;

	cin >> a;
	cin >> b;

	if (a==b){
		cout << "a == b" << endl;
	}

	if(a<b){
		cout << "a < b" << endl;
	}

	if(a>b){
		cout << "a > b" << endl;
	}
}

Compiler output:
a.cc: In function 'int naim()':
a.cc:23:1: warning: no return statement in function returning non-void [-Wreturn-type]
   23 | }
      | ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include<iostream>
using namespace std;
int main(){
	int a;
	int b;
	cin>>a;
	cin>>b;
	if(a<b)
		cout<<"a<b"<<endl;
	}
	if(a>b)
		cout<<"a>b"<<endl;
	}
	if(a==b)
		cout<<"a==b"<<endl;
	}
	
	return 0;
}
	
	
	
	

Compiler output:
a.cc:11:9: error: expected unqualified-id before 'if'
   11 |         if(a>b)
      |         ^~
a.cc:13:9: error: expected declaration before '}' token
   13 |         }
      |         ^
a.cc:14:9: error: expected unqualified-id before 'if'
   14 |         if(a==b)
      |         ^~
a.cc:16:9: error: expected declaration before '}' token
   16 |         }
      |         ^
a.cc:18:9: error: expected unqualified-id before 'return'
   18 |         return 0;
      |         ^~~~~~
a.cc:19:1: error: expected declaration before '}' token
   19 | }
      | ^
Language: C++

#include<iostream>
using namespace std;
int main(){
	int a;
	int b;
	cin>>a;
	cin>>b;
	if(a<b)
		cout<<"a<b"<<endl;
	
	else if(a>b)
		cout<<"a>b"<<endl;
	
	else(a==b)
		cout<<"a==b"<<endl;
	
	
	return 0;
}
	
	
	
	
	

Compiler output:
a.cc: In function 'int main()':
a.cc:14:19: error: expected ';' before 'cout'
   14 |         else(a==b)
      |                   ^
      |                   ;
   15 |                 cout<<"a==b"<<endl;
      |                 ~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
	int a,b;
	cin>>a,b;
	if(a<b)
		cout<<"a < b\n"
	
	else if(a>b)
		cout<<"a > b\n"
	
	else (a==b)
		cout<<"a == b\n"
	
	return 0;
}
	
	
	
	
	
	

Compiler output:
a.cc: In function 'int main()':
a.cc:7:32: error: expected ';' before 'else'
    7 |                 cout<<"a < b\n"
      |                                ^
      |                                ;
    8 | 
    9 |         else if(a>b)
      |         ~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
	int a,b;
	cin>>a,b;
	if(a<b)
		cout<<"a < b\n"
	
	else if(a>b)
		cout<<"a > b\n"
	
	else
		cout<<"a == b\n"
}
	
	
	
	
	
	
	
	

Compiler output:
a.cc: In function 'int main()':
a.cc:7:32: error: expected ';' before 'else'
    7 |                 cout<<"a < b\n"
      |                                ^
      |                                ;
    8 | 
    9 |         else if(a>b)
      |         ~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
	int a,b;
	cin>>a;
	cin>>b;
	if(a<b)
		cout<<"a < b\n"
	
	else if(a>b)
		cout<<"a > b\n"
	
	else
		cout<<"a == b\n"
}
	
	
	
	
	
	
	

Compiler output:
a.cc: In function 'int main()':
a.cc:8:32: error: expected ';' before 'else'
    8 |                 cout<<"a < b\n"
      |                                ^
      |                                ;
    9 | 
   10 |         else if(a>b)
      |         ~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
	int a,b;
	cin>>a;
	cin>>b;
	if(a<b)
		cout<<"a < b"endl;
	
	else if(a>b)
		cout<<"a > b"endl;
	
	else
		cout<<"a == b"endl;
	return 0;
}

	
	
	
	
	
	
	

Compiler output:
a.cc: In function 'int main()':
a.cc:8:23: error: unable to find string literal operator 'operator""endl' with 'const char [6]', 'long unsigned int' arguments
    8 |                 cout<<"a < b"endl;
      |                       ^~~~~~~~~~~
a.cc:11:23: error: unable to find string literal operator 'operator""endl' with 'const char [6]', 'long unsigned int' arguments
   11 |                 cout<<"a > b"endl;
      |                       ^~~~~~~~~~~
a.cc:14:23: error: unable to find string literal operator 'operator""endl' with 'const char [7]', 'long unsigned int' arguments
   14 |                 cout<<"a == b"endl;
      |                       ^~~~~~~~~~~~
Language: C++


	
	
	
	#include<iostream>
using namespace std;
int main(){
	int a,b;
	cin>>a;
	cin>>b;
	if(a<b)
		cout<<"a < b"endl;
	
	else if(a>b)
		cout<<"a > b"endl;
	
	else(a==b)
		cout<<"a == b"endl;
	return 0;
}

	
	

Compiler output:
a.cc: In function 'int main()':
a.cc:12:23: error: unable to find string literal operator 'operator""endl' with 'const char [6]', 'long unsigned int' arguments
   12 |                 cout<<"a < b"endl;
      |                       ^~~~~~~~~~~
a.cc:15:23: error: unable to find string literal operator 'operator""endl' with 'const char [6]', 'long unsigned int' arguments
   15 |                 cout<<"a > b"endl;
      |                       ^~~~~~~~~~~
a.cc:17:19: error: expected ';' before 'cout'
   17 |         else(a==b)
      |                   ^
      |                   ;
   18 |                 cout<<"a == b"endl;
      |                 ~~~~
Language: C++

#include <iostream>
using namespace std;
int main() {
	int a,b
	scanf("%d %d",&a,&b);
	if(a<b){
		printf("a<b/n");
	}else if (a>b){
		printf("a>b/n");
	}else {
		printf("a==b/n");
	}
	// your code goes here
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: expected initializer before 'scanf'
    5 |         scanf("%d %d",&a,&b);
      |         ^~~~~
a.cc:6:14: error: 'b' was not declared in this scope
    6 |         if(a<b){
      |              ^
Language: C++

#include <iostream>
using namespace std;
int main() {
	int a,b
	scanf("%d %d",&a,&b);
	if(a<b){
		printf("a<b"/n);
	}else if (a>b){
		printf("a>b"/n);
	}else {
		printf("a==b"/n);
	}
	// your code goes here
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: expected initializer before 'scanf'
    5 |         scanf("%d %d",&a,&b);
      |         ^~~~~
a.cc:6:14: error: 'b' was not declared in this scope
    6 |         if(a<b){
      |              ^
a.cc:7:30: error: 'n' was not declared in this scope
    7 |                 printf("a<b"/n);
      |                              ^
a.cc:9:30: error: 'n' was not declared in this scope
    9 |                 printf("a>b"/n);
      |                              ^
a.cc:11:31: error: 'n' was not declared in this scope
   11 |                 printf("a==b"/n);
      |                               ^
Language: C++

#include <iostream>
using namespace std;
int main(){
	int a,b;
	cin >> a,b;

	if(a < b);
	cout << "a < b" <<endl;
		else if(a > b)
        cout << "a > b" <<endl;
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:17: error: 'else' without a previous 'if'
    9 |                 else if(a > b)
      |                 ^~~~
Language: C++

#include <iostream>
using namespace std;
int main(){
	int a,b;
	cin >> a >> b;

	if(a < b);
	cout << "a < b" <<endl;
		else if(a > b)
        cout << "a > b" <<endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:17: error: 'else' without a previous 'if'
    9 |                 else if(a > b)
      |                 ^~~~
Language: C++

#include <iostream>
using namespace std;
int main(){
	int a,b;
	cin >> a >> b;

	if (a < b)
	cout << "a < b" <<endl;
		else if (a > b)
        cout << "a > b" <<endl;
    		else if(a == b)
    		cout << "a == b" <<std; 

}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:39: error: expected primary-expression before ';' token
   12 |                 cout << "a == b" <<std;
      |                                       ^
Language: C++

#include <iostream>
using namespace std;
int main(){
int a, b;
cin >> a >> b;
if( a>b ){
cout << "a > b" <<endl;
}else if( a==b ){
cout << "a == b" << endl;
}else if ( a<b ){
cout << "a < b" << endl;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:2: error: expected '}' at end of input
   13 | }
      |  ^
a.cc:3:11: note: to match this '{'
    3 | int main(){
      |           ^
Language: C++

#include<iostream>
using namespace std;
int main(){
int a,b;
cin>>a>>b;
if(a>b)
cout<<a>b<<endl;
if(a<b)
cout<<a<b<<endl;
if(a==b)
cout<<a==b<<endl;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:10: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    7 | cout<<a>b<<endl;
      |         ~^~~~~~
a.cc:9:10: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    9 | cout<<a<b<<endl;
      |         ~^~~~~~
a.cc:11:11: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   11 | cout<<a==b<<endl;
      |          ~^~~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
int a,b;
cin>>a>>b;
if(a>b)
cout<<a>b<<endl;
else if(a==b)
cout<<a==b<<endl;
else
cout<<a<b<<endl;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:10: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    7 | cout<<a>b<<endl;
      |         ~^~~~~~
a.cc:9:11: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    9 | cout<<a==b<<endl;
      |          ~^~~~~~
a.cc:11:10: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   11 | cout<<a<b<<endl;
      |         ~^~~~~~
Language: C++

#include<iostream>

using namespace std;

int main()
{
    int a, b;
    cin >> a >> b;
    
    if(a < b){
        cout << a << " < " << b;
    }elseif(a > b){
        cout << a << " > " << b;
    }else{
        cout << a << " == " << b;
    }
    cout << endl;

    return 0;
}
    

Compiler output:
a.cc: In function 'int main()':
a.cc:12:6: error: 'elseif' was not declared in this scope
   12 |     }elseif(a > b){
      |      ^~~~~~
a.cc:14:6: error: 'else' without a previous 'if'
   14 |     }else{
      |      ^~~~
Language: C++


public class Main {
	public static void main(String[]args) {
		java.util.Scanner scanner = new java.util.Scanner(System.in);
		int a = scanner.nextInt();
		int b = scanner.nextInt();
	
		if ( a < b ) {
			System.out.print("a < b ");
		} else if ( a > b ) {
			System.out.print(" a > b ");
		} else if ( a == b )
			System.out.println(" a == b ");
	}
}

Compiler output:
a.cc:2:1: error: expected unqualified-id before 'public'
    2 | public class Main {
      | ^~~~~~
Language: C++


public class Main {
	public static void main(String[]args) {
		java.util.Scanner scanner = new java.util.Scanner(System.in);
		int a = scanner.nextInt();
		int b = scanner.nextInt();
	
		if ( a < b ) {
			System.out.print(" a < b ");
		} else if ( a > b ) {
			System.out.print(" a > b ");
		} else if ( a == b )
			System.out.println(" a == b ");
	}
}

Compiler output:
a.cc:2:1: error: expected unqualified-id before 'public'
    2 | public class Main {
      | ^~~~~~
Language: C++

a, b = STDIN.gets.split.map(&:to_i)
if a < b then
puts 'a<b'
elsif a > b then
puts 'a>b'
else
puts 'a==b'
end

Compiler output:
a.cc:3:6: warning: multi-character character constant [-Wmultichar]
    3 | puts 'a<b'
      |      ^~~~~
a.cc:5:6: warning: multi-character character constant [-Wmultichar]
    5 | puts 'a>b'
      |      ^~~~~
a.cc:7:6: warning: multi-character character constant [-Wmultichar]
    7 | puts 'a==b'
      |      ^~~~~~
a.cc:1:1: error: 'a' does not name a type
    1 | a, b = STDIN.gets.split.map(&:to_i)
      | ^
Language: C++

#include <stdio.h>

int main(void){
int a,b;
scant("%d %d",&a,&b);
if (a <  b){
printf("a < b");
}
if (a > b){
printf("a > b");
}
if(a == b){
printf("a == b");
}
 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:1: error: 'scant' was not declared in this scope; did you mean 'scanf'?
    5 | scant("%d %d",&a,&b);
      | ^~~~~
      | scanf
Language: C++

#include <stdio.h>

int main(void){
int a,b;
scant("%d %d",&a,&b);
if (a <  b){
printf("a < b\n");
}
if (a > b){
printf("a > b\n");
}
if(a == b){
printf("a == b\n");
}
 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:1: error: 'scant' was not declared in this scope; did you mean 'scanf'?
    5 | scant("%d %d",&a,&b);
      | ^~~~~
      | scanf
Language: C++

#include <iostream>
using namespace std;

int main()
{
	int a,b;
	cin >> a >> b;
	if (a < b)
		cout << a << "<" << b <<endl;
	{
		else if (a > b)
			cout << a << ">" << b <<endl;
		else if (a == b)
			cout << a << "==" << b << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:17: error: 'else' without a previous 'if'
   11 |                 else if (a > b)
      |                 ^~~~
Language: C++

#include <iostream>
using namespace std;

int main()
{
	int a,b;
	cin >> a >> b;
	if (a < b)
		cout << "a < b" <<endl;
	{
		else if (a > b)
			cout << "a > b" <<endl;
		{
		else if (a == b)
			cout << "a == b" << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:17: error: 'else' without a previous 'if'
   11 |                 else if (a > b)
      |                 ^~~~
a.cc:14:17: error: 'else' without a previous 'if'
   14 |                 else if (a == b)
      |                 ^~~~
a.cc:17:2: error: expected '}' at end of input
   17 | }
      |  ^
a.cc:5:1: note: to match this '{'
    5 | {
      | ^
Language: C++

#include <iostream>
using namespace std;

int main()
{
	int a,b;
	cin >> a >> b;
	if (a < b)
		cout << "a < b" <<endl;
		{
		else if (a > b)
			cout << "a > b" <<endl;
		{
		else if (a == b)
			cout << "a == b" << endl;
		}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:17: error: 'else' without a previous 'if'
   11 |                 else if (a > b)
      |                 ^~~~
a.cc:14:17: error: 'else' without a previous 'if'
   14 |                 else if (a == b)
      |                 ^~~~
a.cc:17:2: error: expected '}' at end of input
   17 | }
      |  ^
a.cc:5:1: note: to match this '{'
    5 | {
      | ^
Language: C++

#include <iostream>
using namespace std;

int main()
{
	int a,b;
	cin >> a >> b;
	if (a < b)
		cout << "a < b" <<endl;
		{
		else if (a > b);
			cout << "a > b" <<endl;
		{
		else if (a == b);
			cout << "a == b" << endl;
		}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:17: error: 'else' without a previous 'if'
   11 |                 else if (a > b);
      |                 ^~~~
a.cc:14:17: error: 'else' without a previous 'if'
   14 |                 else if (a == b);
      |                 ^~~~
a.cc:17:2: error: expected '}' at end of input
   17 | }
      |  ^
a.cc:5:1: note: to match this '{'
    5 | {
      | ^
Language: C++

#include<iostream>

int main(){
	int a,b;
	std::cin>>a>>b;
	if(a>b){
		std::cout<<"a > b"<<std::endl
		}elseif(a<b){
		std::cout<<"a < b"<<std::endl
		}else{
		std::cout<<"a == b"<<std::endl
		}
	return 0;
	}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:46: error: expected ';' before '}' token
    7 |                 std::cout<<"a > b"<<std::endl
      |                                              ^
      |                                              ;
    8 |                 }elseif(a<b){
      |                 ~                             
a.cc:8:18: error: 'elseif' was not declared in this scope
    8 |                 }elseif(a<b){
      |                  ^~~~~~
a.cc:10:18: error: 'else' without a previous 'if'
   10 |                 }else{
      |                  ^~~~
a.cc:11:47: error: expected ';' before '}' token
   11 |                 std::cout<<"a == b"<<std::endl
      |                                               ^
      |                                               ;
   12 |                 }
      |                 ~
Language: C++

#include<iostream>

int main(){
	int a,b;
	std::cin>>a>>b;
	if(a>b){
		std::cout<<"a > b"<<std::endl;
		}elseif(a<b){
		std::cout<<"a < b"<<std::endl;
		}else{
		std::cout<<"a == b"<<std::endl;
		}
	return 0;
	}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:18: error: 'elseif' was not declared in this scope
    8 |                 }elseif(a<b){
      |                  ^~~~~~
a.cc:10:18: error: 'else' without a previous 'if'
   10 |                 }else{
      |                  ^~~~
Language: C++

#include<iostream>

int main(){
	int a,b;
	std::cin>>a>>b;
	if(a>b){
		std::cout<<"a > b"<<std::endl
		}else if(a<b){
		std::cout<<"a < b"<<std::endl
		}else{
		std::cout<<"a == b"<<std::endl
		}
	return 0;
	}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:46: error: expected ';' before '}' token
    7 |                 std::cout<<"a > b"<<std::endl
      |                                              ^
      |                                              ;
    8 |                 }else if(a<b){
      |                 ~                             
a.cc:9:46: error: expected ';' before '}' token
    9 |                 std::cout<<"a < b"<<std::endl
      |                                              ^
      |                                              ;
   10 |                 }else{
      |                 ~                             
a.cc:11:47: error: expected ';' before '}' token
   11 |                 std::cout<<"a == b"<<std::endl
      |                                               ^
      |                                               ;
   12 |                 }
      |                 ~
Language: C++

#include<iosteream>
using namespace std;
int main(){
	int a,b;
	cin>>a>>b;
	if(a>b){
		cout<<"a > B"<<endl;
	}else if(a<b){
		cout<<"a < b"<<endl;
	}else{
		cout<<"a == b"<<endl;
	}
	return 0;
}

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

#include<iostream>
using namespace std;
??
int main(){
????????int a, b;
??????????
????????cin>> a >> b;
??????????
????????if ( a < b ) cout << "a < b" << endl;
????????else if ( a > b ) cout << "a > b" << endl;
????????else cout << "a == b" << endl;
??
????????return 0;
}

Compiler output:
a.cc:3:1: error: expected unqualified-id before '?' token
    3 | ??
      | ^
Language: C++

#include<iostream>
using namespace std;
int main(){
int a,b;
cin>>a>>b;
if(a>b)
cout<<"a>b"<<endl;
else if(a<b)
cout<<"a<b"<<endl;
else if(a==b)
cout<<"a==b"<<endl;
endif;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:1: error: 'endif' was not declared in this scope
   12 | endif;
      | ^~~~~
Language: C++

#iuclude<iostream>
using namespace std;
int main()
{
	int a,b;
	cin>>a,b;
	if (a<b)
	  cout<<a<<"<"<<b;
	if (a=b)
	  cout<<a<<"="<<b;
	if (a>b)
	  cout<<a<<">"<<b<<endl;
	return 0;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #iuclude; did you mean #include?
    1 | #iuclude<iostream>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:6:9: error: 'cin' was not declared in this scope
    6 |         cin>>a,b;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #iuclude<iostream>
a.cc:8:11: error: 'cout' was not declared in this scope
    8 |           cout<<a<<"<"<<b;
      |           ^~~~
a.cc:8:11: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:10:11: error: 'cout' was not declared in this scope
   10 |           cout<<a<<"="<<b;
      |           ^~~~
a.cc:10:11: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:12:11: error: 'cout' was not declared in this scope
   12 |           cout<<a<<">"<<b<<endl;
      |           ^~~~
a.cc:12:11: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:12:28: error: 'endl' was not declared in this scope
   12 |           cout<<a<<">"<<b<<endl;
      |                            ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #iuclude<iostream>
Language: C++

#iuclude<iostream>
using namespace std;
int main()
{
	int a,b;
	cin>>a,b;
	if (a<b)
	  cout << a << "<" << b;
	if (a==b)
	  cout << a << "=" << b;
	if (a>b)
	  cout<< a << ">" << b << endl;
	return 0;
}

Compiler output:
a.cc:1:2: error: invalid preprocessing directive #iuclude; did you mean #include?
    1 | #iuclude<iostream>
      |  ^~~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:6:9: error: 'cin' was not declared in this scope
    6 |         cin>>a,b;
      |         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #iuclude<iostream>
a.cc:8:11: error: 'cout' was not declared in this scope
    8 |           cout << a << "<" << b;
      |           ^~~~
a.cc:8:11: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:10:11: error: 'cout' was not declared in this scope
   10 |           cout << a << "=" << b;
      |           ^~~~
a.cc:10:11: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:12:11: error: 'cout' was not declared in this scope
   12 |           cout<< a << ">" << b << endl;
      |           ^~~~
a.cc:12:11: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:12:35: error: 'endl' was not declared in this scope
   12 |           cout<< a << ">" << b << endl;
      |                                   ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | #iuclude<iostream>
Language: C++

#include<iostream>
using namespace std;
??
int main(){
????????int a, b;
??????????
????????cin >> a >> b;
??????????
????????if ( a < b ) cout << "a < b" << endl;
????????else if ( a > b ) cout << "a > b" << endl;
????????else cout << "a == b" << endl;
??
????????return 0;
}

Compiler output:
a.cc:3:1: error: expected unqualified-id before '?' token
    3 | ??
      | ^
Language: C++

#include <iostream>
using namespace std;
??
int main(){
????????int a, b;
??
????????cin >> a;
????????cin >> b;
??
????????if(a < b){
????????????????cout << "a < b" << endl;
????????}else if(a > b){
????????????????cout << "a > b" << endl;
????????}else{
????????????????cout << "a == b" << endl;
????????}
??
????????return 0;
}

Compiler output:
a.cc:3:1: error: expected unqualified-id before '?' token
    3 | ??
      | ^
Language: C++

#include <iostream>
using namespace std;

int main() {
	int x,y;
	cin>>x>>y;
	if (a>b){
		cout<<"a<b"<<endl;
	}
	if (b>a){
		cout<<"b<a"<<endl;
	}
		if (a==b){
		cout<<"a==b"<<endl;
	}
	// your code goes here
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:13: error: 'a' was not declared in this scope
    7 |         if (a>b){
      |             ^
a.cc:7:15: error: 'b' was not declared in this scope
    7 |         if (a>b){
      |               ^
a.cc:10:13: error: 'b' was not declared in this scope
   10 |         if (b>a){
      |             ^
a.cc:10:15: error: 'a' was not declared in this scope
   10 |         if (b>a){
      |               ^
a.cc:13:21: error: 'a' was not declared in this scope
   13 |                 if (a==b){
      |                     ^
a.cc:13:24: error: 'b' was not declared in this scope
   13 |                 if (a==b){
      |                        ^
Language: C++

#include <iostream>
using namespace std;

int main() {
	int x,y;
	cin>>x>>y;
	if (a>b){
		cout<<"a>b"<<endl;
	}
	if (b>a){
		cout<<"b>a"<<endl;
	}
		if (a==b){
		cout<<"a==b"<<endl;
	}
	// your code goes here
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:13: error: 'a' was not declared in this scope
    7 |         if (a>b){
      |             ^
a.cc:7:15: error: 'b' was not declared in this scope
    7 |         if (a>b){
      |               ^
a.cc:10:13: error: 'b' was not declared in this scope
   10 |         if (b>a){
      |             ^
a.cc:10:15: error: 'a' was not declared in this scope
   10 |         if (b>a){
      |               ^
a.cc:13:21: error: 'a' was not declared in this scope
   13 |                 if (a==b){
      |                     ^
a.cc:13:24: error: 'b' was not declared in this scope
   13 |                 if (a==b){
      |                        ^
Language: C++

#include<iostream>
using namespace std;
??
int main(){
??
int a,b;
??
cin >> a>>b;
??
if(a>b) cout<<"a > b"<<endl;
else if(a<b) cout<<"a < b"<<endl;
else cout<<"a == b"<<endl;
??
??
return 0;
??
}

Compiler output:
a.cc:3:1: error: expected unqualified-id before '?' token
    3 | ??
      | ^
Language: C++

#include<iostream>
using namespace std;
??
int main(){
??
int a,b;
??
cin >> a>>b;
??
if(a>b) {cout<<"a > b"<<endl;}
else if (a<b) {cout<<"a < b"<<endl;}
else {cout<<"a == b"<<endl;}

return 0;
??
}

Compiler output:
a.cc:3:1: error: expected unqualified-id before '?' token
    3 | ??
      | ^