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

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

int main()
{
	long long int m,n;
	int i;
	while(scanf("%lld %lld",&m,&n != EOF)
	{
		m += n;
		i = 0;
		while(m)
		{
			i++;
			m /= 10;
		}
		printf("%d\n",i);
	}
}

Compiler output:
main.c: In function 'main':
main.c:8:39: warning: comparison between pointer and integer
    8 |         while(scanf("%lld %lld",&m,&n != EOF)
      |                                       ^~
main.c:8:46: error: expected ')' before '{' token
    8 |         while(scanf("%lld %lld",&m,&n != EOF)
      |              ~                               ^
      |                                              )
    9 |         {
      |         ~                                     
main.c:19:1: error: expected expression before '}' token
   19 | }
      | ^
Language: C

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

int main(void)
{
 int a,b;
 int i;
 scanf("%d %d",&a,&b);
 else printf("%d\n",(int)log10(a+b)+1);
 return 0;
}

Compiler output:
main.c: In function 'main':
main.c:9:2: error: 'else' without a previous 'if'
    9 |  else printf("%d\n",(int)log10(a+b)+1);
      |  ^~~~
Language: C

#include <stdio.h>

int main(void)
{

	int a,b,c,i;
	int n=1;

	scanf("%d",&a);
	scanf("%d",&b);
	c=a+b;

	for(i=1;i>0;i++){
		c=c/10;
		if(c==0){
			break;
		}
		n++;
	}
	printf("%d",n);
return 0;

Compiler output:
main.c: In function 'main':
main.c:21:1: error: expected declaration or statement at end of input
   21 | return 0;
      | ^~~~~~
Language: C

#include	<stdio.h>

int main(int argc, char** argv){
	int i, j, k, x[3], y[3];
	

	for(k = 0; k < 3; k++)	scanf("%d %d", &x[k], &y[k]);
	
	for(k = 0; k < 3; k++){
		for(i = 0, j = 1;(x + y) / j;i++, j *= 10);
	
		printf("%d\n", i);
	}

	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:37: error: invalid operands to binary + (have 'int *' and 'int *')
   10 |                 for(i = 0, j = 1;(x + y) / j;i++, j *= 10);
      |                                   ~ ^
      |                                   | |
      |                                   | int *
      |                                   int *
Language: C

include <stdio.h>

int main(){
int a,b,c,d;
while(scanf("%d %d",&a,&b) != EOF){
d=10;
for(c=1;c<=16;c++){
if(d>(a+b)) break;
d=d*10;
}
printf("%d\n",c);
}
return 0;
}

Compiler output:
main.c:1:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include <stdio.h>
      |         ^
Language: C

#include<stdio.h>
int main(void)
{
	int a,b,i,sum=0;count=0;
	while (scanf("%d%d",&a,&b) != EOF){
	sum=a+b;
	for(;;){
		sum=sum/10;
		count++;
		if(sum==0)
		break;
	}	
	printf("%d",count);
	count=0;
	}

	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:25: error: 'count' undeclared (first use in this function)
    4 |         int a,b,i,sum=0;count=0;
      |                         ^~~~~
main.c:4:25: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(){
	int a,b,ans[100],i,l,t;
	
	for(i=0;;i++){
		scanf("%d %d",&a,&b);
		t=a+b;
		if(t<0){
			i=n;
			break;
		}
		for(ans[i]=1;;){
			t=(t-t%10)/10;
			if(t>0)
			ans[i]++;
			else
			break;
		}
	}
	
	for(i=0;i<n;i++)printf("%d\n",ans[i]);
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:10:27: error: 'n' undeclared (first use in this function)
   10 |                         i=n;
      |                           ^
main.c:10:27: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
#incllude<string.h>
int main(){
    int x,y,z;
    scanf("%d %d",x,y);
    x+=y;
    z=strlen(x);
    printf("%d",z);
    return 0;
}

Compiler output:
main.c:2:2: error: invalid preprocessing directive #incllude; did you mean #include?
    2 | #incllude<string.h>
      |  ^~~~~~~~
      |  include
main.c: In function 'main':
main.c:7:7: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    7 |     z=strlen(x);
      |       ^~~~~~
main.c:2:1: note: include '<string.h>' or provide a declaration of 'strlen'
    1 | #include<stdio.h>
  +++ |+#include <string.h>
    2 | #incllude<string.h>
main.c:7:7: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
    7 |     z=strlen(x);
      |       ^~~~~~
main.c:7:7: note: include '<string.h>' or provide a declaration of 'strlen'
main.c:7:14: error: passing argument 1 of 'strlen' makes pointer from integer without a cast [-Wint-conversion]
    7 |     z=strlen(x);
      |              ^
      |              |
      |              int
main.c:7:14: note: expected 'const char *' but argument is of type 'int'
Language: C

#include <stdio.h>
#include <math.h>
 int main(void){
  int a,b;
   while(scanf("%d%d",&a,&b) != EOF){
     int x = a+b;
       int digit = log(x)/log(10);
          printf("%d\n",dight+1);
}
return 0;
}
 

Compiler output:
main.c: In function 'main':
main.c:8:25: error: 'dight' undeclared (first use in this function); did you mean 'digit'?
    8 |           printf("%d\n",dight+1);
      |                         ^~~~~
      |                         digit
main.c:8:25: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
#include <math.h>
 int main(void){
  int a,b;
   while(scanf("%d%d",&a,&b) != EOF){
     double x = a+b;
       double digit = log(x)/log(10.0);
	   int digitnew;
	   digitnew = floor(digit);
          printf("%d\n",digitnew+1);
}

Compiler output:
main.c: In function 'main':
main.c:11:1: error: expected declaration or statement at end of input
   11 | }
      | ^
Language: C

#include<stdio.h>
#define MAX_SIZE 256

int count(int num);

int main(){
	int num[2];
	int ans[MAX_SIZE];
	int count = 0;
	
	while(1)
	{
		scanf("%d %d", num, num+1);
		if(num[0] == EOF)
		{
			break;
		}
		else
		{
			printf("%d\n", count(num[0] + num[1]));
		}
	}
	
	return 0;
}

int count(int num)
{
	int ans = 0;
	
	while(num > 0)
	{
		ans++;
		num /= 10;
	}
	
	return ans;
}

Compiler output:
main.c: In function 'main':
main.c:20:40: error: called object 'count' is not a function or function pointer
   20 |                         printf("%d\n", count(num[0] + num[1]));
      |                                        ^~~~~
main.c:9:13: note: declared here
    9 |         int count = 0;
      |             ^~~~~
Language: C

#include <stdio.h>

int main(void){

	int FirstNum, SecondNum, Sum;
	while(1){
		if(scanf("%d %d",&FirstNum, &SecondNum); == EOF)
			break;
		Sum = FirstNum + SecondNum;
		if (Sum < 10) printf("1\n"); goto label;
		if (Sum < 100) printf("2\n"); goto label;
		if (Sum < 1000) printf("3\n"); goto label;
		if (Sum < 10000) printf("4\n"); goto label;
		if (Sum < 100000) printf("5\n"); goto label;
		if (Sum < 1000000) printf("6\n"); goto label;
		if (Sum < 10000000) printf("7\n"); goto label;
		label: ;
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:56: error: expected ')' before ';' token
    7 |                 if(scanf("%d %d",&FirstNum, &SecondNum); == EOF)
      |                   ~                                    ^
      |                                                        )
Language: C

#include<stdio.h>

int main(){
	int a,b;
	while(scanf("%d%d",&a,&b) != EOF){
		sprintf(temp,"%d",a+b);
		printf("%d\n",strlen(temp));
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:25: error: 'temp' undeclared (first use in this function)
    6 |                 sprintf(temp,"%d",a+b);
      |                         ^~~~
main.c:6:25: note: each undeclared identifier is reported only once for each function it appears in
main.c:7:31: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    7 |                 printf("%d\n",strlen(temp));
      |                               ^~~~~~
main.c:2:1: note: include '<string.h>' or provide a declaration of 'strlen'
    1 | #include<stdio.h>
  +++ |+#include <string.h>
    2 | 
main.c:7:31: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
    7 |                 printf("%d\n",strlen(temp));
      |                               ^~~~~~
main.c:7:31: note: include '<string.h>' or provide a declaration of 'strlen'
Language: C

#include<stdio.h>

int main(){
	int a,b;
	while(scanf("%d%d",&a,&b) != EOF){
		sprintf(temp,"%d",a+b);
		printf("%d\n",temp);
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:25: error: 'temp' undeclared (first use in this function)
    6 |                 sprintf(temp,"%d",a+b);
      |                         ^~~~
main.c:6:25: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int main (void){
            int a,b,c = 1,d;
             scanf("%d %d",a,b);
                 d = a+b
               while ( d<10 ){
                     d = d/10;
                     c++;
                    }
               printf("%d\n",c);
              return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:6:25: error: expected ';' before 'while'
    6 |                  d = a+b
      |                         ^
      |                         ;
    7 |                while ( d<10 ){
      |                ~~~~~
Language: C

#include <stdio.h>

int main (void){

          while(1){
            int a,b,c = 1,d;
             scanf("%d %d",a,b);
                 d = a+b
               while ( d<10 ){
                     d = d/10;
                     c++;
                    }
               printf("%d\n",c);
             }
              return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:8:25: error: expected ';' before 'while'
    8 |                  d = a+b
      |                         ^
      |                         ;
    9 |                while ( d<10 ){
      |                ~~~~~
Language: C

#include <stdio.h>

int main (void){

          while(!a = \0){
            int a,b,c = 1,d;
             scanf("%d %d",a,b);
                 d = a+b;
               while ( d<10 ){
                     d = d/10;
                     c++;
                    }
               printf("%d\n",c);
             }
              return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:5:18: error: 'a' undeclared (first use in this function)
    5 |           while(!a = \0){
      |                  ^
main.c:5:18: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:22: error: stray '\' in program
    5 |           while(!a = \0){
      |                      ^
Language: C

#include <stdio.h>

int main (void){

          while(1){
            int a,b,c = 1,d;
             scanf("%d %d",a,b);
                if( a = \0){
                 break;
                 }
                 else{
                  d = a+b;
               while ( d<10 ){
                     d = d/10;
                     c++;
                      }
                    }
               printf("%d\n",c);
             }
              return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:8:25: error: stray '\' in program
    8 |                 if( a = \0){
      |                         ^
Language: C

#include <stdio.h>

int main (void){

          while(1){
            int a,b,c = 1,d;
             scanf("%d %d",a,b);
                if(a = \0){
                 break;
                 }
                 else{
                  d = a+b;
               while ( d<10 ){
                     d = d/10;
                     c++;
                      }
                    }
               printf("%d\n",c);
             }
              return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:8:24: error: stray '\' in program
    8 |                 if(a = \0){
      |                        ^
Language: C

#include <stdio.h>

int main (void){

          while(1){
            int a,b,c = 1,d;
             scanf("%d %d",a,b);
                if(a=\0){
                 break;
                 }
                 else{
                  d=a+b;
               while ( d<10 ){
                     d = d/10;
                     c++;
                      }
                    }
               printf("%d\n",c);
             }
              return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:8:22: error: stray '\' in program
    8 |                 if(a=\0){
      |                      ^
Language: C

#include <stdio.h>

int main (void){

            int a,b,c = 1,d;
             while( scanf("%d %d",a,b) != eof)
                  d=a+b;
               while ( d<10 ){
                     d = d/10;
                     c++;
                    }
               printf("%d\n",c);
             }
              return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:6:43: error: 'eof' undeclared (first use in this function); did you mean 'feof'?
    6 |              while( scanf("%d %d",a,b) != eof)
      |                                           ^~~
      |                                           feof
main.c:6:43: note: each undeclared identifier is reported only once for each function it appears in
main.c: At top level:
main.c:14:15: error: expected identifier or '(' before 'return'
   14 |               return 0;
      |               ^~~~~~
main.c:15:13: error: expected identifier or '(' before '}' token
   15 |             }
      |             ^
Language: C

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

    int main(void){
          int a,b;
           while(1){
             scanf("%d %d",&a,&b);
             if( a == null){break;}
             printf("%d",log10(a+b));
             return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:8:23: error: 'null' undeclared (first use in this function)
    8 |              if( a == null){break;}
      |                       ^~~~
main.c:8:23: note: each undeclared identifier is reported only once for each function it appears in
main.c:11:13: error: expected declaration or statement at end of input
   11 |             }
      |             ^
Language: C

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

    int main(void){
          int a,b;
           while(1){
             scanf("%d %d",&a,&b);
            
             printf("%d",log10(a+b));
             return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:11:13: error: expected declaration or statement at end of input
   11 |             }
      |             ^
Language: C

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

    int main(void){
          int a,b;
           while(scanf("%d %d",&a,&b) !=eof)
          {
             printf("%d",log10(a+b));
          }
             return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:6:41: error: 'eof' undeclared (first use in this function); did you mean 'erf'?
    6 |            while(scanf("%d %d",&a,&b) !=eof)
      |                                         ^~~
      |                                         erf
main.c:6:41: note: each undeclared identifier is reported only once for each function it appears in
Language: C

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

    int main(void){
          int a,b,c;
          
           while(scanf("%d %d",&a,&b) !=EOF)
          {
               c=1; c=c+log10(a+b)
             printf("%d",c);
          }
             return 0;
            }

Compiler output:
main.c: In function 'main':
main.c:9:35: error: expected ';' before 'printf'
    9 |                c=1; c=c+log10(a+b)
      |                                   ^
      |                                   ;
   10 |              printf("%d",c);
      |              ~~~~~~
Language: C

#include<stdio.h>
#include<math.h>
int main()
{
   __int64 a,b;
   while(scanf("%I64d%I64d",&a,&b)!=EOF)
   {
      printf("%I64d\n", (__int64)log10(a+b)+1);
   }
}

Compiler output:
main.c: In function 'main':
main.c:5:4: error: unknown type name '__int64'; did you mean '__int64_t'?
    5 |    __int64 a,b;
      |    ^~~~~~~
      |    __int64_t
main.c:8:26: error: '__int64' undeclared (first use in this function); did you mean '__int64_t'?
    8 |       printf("%I64d\n", (__int64)log10(a+b)+1);
      |                          ^~~~~~~
      |                          __int64_t
main.c:8:26: note: each undeclared identifier is reported only once for each function it appears in
main.c:8:34: error: expected ')' before 'log10'
    8 |       printf("%I64d\n", (__int64)log10(a+b)+1);
      |             ~                    ^~~~~
      |                                  )
Language: C

#include <stdio.h>

int main(void){
  int i,a,b;
  int c,count;
  count=0;
  while((scanf("%d %d",&a,&b)!=0)){
    c=a+b;
    while(){
      c=c/10;
      count++;
      if(c==0)break;
    }
    printf("%d\n",count);
    count=0;
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:9:11: error: expected expression before ')' token
    9 |     while(){
      |           ^
Language: C

#include <stdio.h>
   int main(void){  
   int a,b,c;
   while(scanf("%d %d",&a,&b)!=EOF){
     c=a+b;
     c/=10; 
     printf("%d\n,c+1); 
      }   
     return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:13: warning: missing terminating " character
    7 |      printf("%d\n,c+1);
      |             ^
main.c:7:13: error: missing terminating " character
    7 |      printf("%d\n,c+1);
      |             ^~~~~~~~~~~ 
main.c:8:7: error: expected expression before '}' token
    8 |       }
      |       ^
main.c:7:13: error: expected ';' before '}' token
    7 |      printf("%d\n,c+1);
      |             ^
      |             ;
    8 |       }
      |       ~
Language: C

#include <stdio.h>
   int main(void){  
   int a,b,c,n;
   while(scanf("%d %d",&a,&b)!=EOF){
     c=a+b;
     for(n=1;c<10;n++){
        c=c/10;
     }
     printf("%d\n,n); 
      }   
     return 0;
}

Compiler output:
main.c: In function 'main':
main.c:9:13: warning: missing terminating " character
    9 |      printf("%d\n,n);
      |             ^
main.c:9:13: error: missing terminating " character
    9 |      printf("%d\n,n);
      |             ^~~~~~~~~ 
main.c:10:7: error: expected expression before '}' token
   10 |       }
      |       ^
main.c:9:13: error: expected ';' before '}' token
    9 |      printf("%d\n,n);
      |             ^
      |             ;
   10 |       }
      |       ~
Language: C

#include <stdio.h>   int main(void){     int a,b,c,n;   while(scanf("%d %d",&a,&b)!=EOF){     c=a+b;     for(n=1;c<10;n++){        c=c/10;     }     printf("%d\n",n);       }        return 0;}

Compiler output:
main.c:1:22: warning: extra tokens at end of #include directive
    1 | #include <stdio.h>   int main(void){     int a,b,c,n;   while(scanf("%d %d",&a,&b)!=EOF){     c=a+b;     for(n=1;c<10;n++){        c=c/10;     }     printf("%d\n",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 = 0;     int b = 0;     int Sum = 0;     int i = 0;       while( scanf( "%d %d", &a, &b ) != EOF )     {           Sum = a + b;           for( i = 0 ; Sum != 0 ; i ++ ) Sum /= 10;           printf( "%d\n", i );     }       return 0; }

Compiler output:
main.c:1:22: warning: extra tokens at end of #include directive
    1 | #include <stdio.h>   int main( void ) {     int a = 0;     int b = 0;     int Sum = 0;     int i = 0;       while( scanf( "%d %d", &a, &b ) != EOF )     {           Sum = a + b;           for( i = 0 ; Sum != 0 ; i ++ ) Sum /= 10;           printf( "%d\n", i );     }       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>
#include <stdlib.h>
#include <string.h>

int main(){
	int a,b;
	char buff[10];

	//入力終了までループ
	while(scanf("%d %d", &a, &b) != EOF){
		//intからcharに変換
		itoa(a + b,buff,10);
		//文字列の長さを出力
		printf("%d\n", strlen(buff));
	}

    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:17: error: implicit declaration of function 'itoa' [-Wimplicit-function-declaration]
   12 |                 itoa(a + b,buff,10);
      |                 ^~~~
Language: C

#include <stdiuo.h>
int main(void)
{
 unsigned long a,b,sum;
 while(1){
              int i;
              int count=0;
              scanf("%lu %lu",&a,&b);
              sum = a+b;
              while(sum>0){
                                    sum /= 10;
                                    count ++;
              }
              printf("%d",count);
}
return 0;
}

   

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

#include<stdio.h>
int main(void){
    int a,b;
    while(scanf("%d%d"),&a,&b){
        a+=b;
        b=1;
        while(a>=10){
            a/=10;
            b++:
        }
        printf("%d\n",b);
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:9:16: error: expected ';' before ':' token
    9 |             b++:
      |                ^
      |                ;
Language: C

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

int keta(int n){
    int k=1,m=0;
    while(n/k>0){
        m++;
        k*=10;
    }
    return m;
}

Compiler output:
main.c: In function 'main':
main.c:4:18: error: invalid operands to binary & (have 'char *' and 'int')
    4 |     scanf("%d %d"&a,&b);
      |           ~~~~~~~^
      |           |
      |           char *
main.c:5:9: error: implicit declaration of function 'keta' [-Wimplicit-function-declaration]
    5 |     sum=keta(a)+keta(b);
      |         ^~~~
Language: C

#include <stdio.h>
int main(){
    int a,b,sum;
    while(1){
        scanf("%d %d"&a,&b);
        if(a==0 || b==0){
            break;
        }
        else{
            sum=keta(a)+keta(b);
            printf("%d",sum);
        }
    }
    return 0;
}

int keta(int n){
    int k=1,m=0;
    while(n/k>0){
        m++;
        k*=10;
    }
    return m;
}

Compiler output:
main.c: In function 'main':
main.c:5:22: error: invalid operands to binary & (have 'char *' and 'int')
    5 |         scanf("%d %d"&a,&b);
      |               ~~~~~~~^
      |               |
      |               char *
main.c:10:17: error: implicit declaration of function 'keta' [-Wimplicit-function-declaration]
   10 |             sum=keta(a)+keta(b);
      |                 ^~~~
Language: C

#include <stdio.h>
int main(){
    int a,b,sum;
    while(true){
        scanf("%d %d"&a,&b);
        if(a<=0 || b<=0){
            break;
        }
        else{
            sum=keta(a)+keta(b);
            printf("%d",sum);
        }
    }
    return 0;
}

int keta(int n){
    int k=1,m=0;
    while(n/k>0){
        m++;
        k*=10;
    }
    return m;
}

Compiler output:
main.c: In function 'main':
main.c:4:11: error: 'true' undeclared (first use in this function)
    4 |     while(true){
      |           ^~~~
main.c:2:1: note: 'true' is defined in header '<stdbool.h>'; this is probably fixable by adding '#include <stdbool.h>'
    1 | #include <stdio.h>
  +++ |+#include <stdbool.h>
    2 | int main(){
main.c:4:11: note: each undeclared identifier is reported only once for each function it appears in
    4 |     while(true){
      |           ^~~~
main.c:5:22: error: invalid operands to binary & (have 'char *' and 'int')
    5 |         scanf("%d %d"&a,&b);
      |               ~~~~~~~^
      |               |
      |               char *
main.c:10:17: error: implicit declaration of function 'keta' [-Wimplicit-function-declaration]
   10 |             sum=keta(a)+keta(b);
      |                 ^~~~
Language: C

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

int keta(int n){
    int s=0,k=1;
    while(n/k>0){
        s++;
        k*=10;
    }
}

Compiler output:
main.c: In function 'main':
main.c:5:32: warning: comparison between pointer and integer
    5 |     while(scanf(("%d %d",&a,&b)!=EOF){
      |                                ^~
main.c:5:32: error: passing argument 1 of 'scanf' makes pointer from integer without a cast [-Wint-conversion]
    5 |     while(scanf(("%d %d",&a,&b)!=EOF){
      |                                ^
      |                                |
      |                                int
In file included from main.c:1:
/usr/include/stdio.h:428:42: note: expected 'const char *' but argument is of type 'int'
  428 | extern int scanf (const char *__restrict __format, ...) __wur;
      |                   ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
main.c:5:38: error: expected ')' before '{' token
    5 |     while(scanf(("%d %d",&a,&b)!=EOF){
      |          ~                           ^
      |                                      )
main.c:9:1: error: expected expression before '}' token
    9 | }
      | ^
Language: C

int main(){for(int a,b;~scanf("%d%d",&a,&b);printf("%d\n",sprintf((char*)&a,"%d",a+b)));}

Compiler output:
main.c: In function 'main':
main.c:1:25: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    1 | int main(){for(int a,b;~scanf("%d%d",&a,&b);printf("%d\n",sprintf((char*)&a,"%d",a+b)));}
      |                         ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main(){for(int a,b;~scanf("%d%d",&a,&b);printf("%d\n",sprintf((char*)&a,"%d",a+b)));}
main.c:1:25: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    1 | int main(){for(int a,b;~scanf("%d%d",&a,&b);printf("%d\n",sprintf((char*)&a,"%d",a+b)));}
      |                         ^~~~~
main.c:1:25: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:1:45: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    1 | int main(){for(int a,b;~scanf("%d%d",&a,&b);printf("%d\n",sprintf((char*)&a,"%d",a+b)));}
      |                                             ^~~~~~
main.c:1:45: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:1:45: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:1:45: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:1:59: error: implicit declaration of function 'sprintf' [-Wimplicit-function-declaration]
    1 | int main(){for(int a,b;~scanf("%d%d",&a,&b);printf("%d\n",sprintf((char*)&a,"%d",a+b)));}
      |                                                           ^~~~~~~
main.c:1:59: note: include '<stdio.h>' or provide a declaration of 'sprintf'
main.c:1:59: warning: incompatible implicit declaration of built-in function 'sprintf' [-Wbuiltin-declaration-mismatch]
main.c:1:59: note: include '<stdio.h>' or provide a declaration of 'sprintf'
Language: C

#include<stdio.h>
int main()
{
  int a, b, c = 1;
  while(scanf("%d %d",&a,&b)!=EOF){
  (a + b)% 10;
  c++;
  printf("%d\n",c);
  if(a < 0 || b < 0)
	  break;
  if(c > 200)
	  break;
  }
  
  return 0;
}
}

Compiler output:
main.c:17:1: error: expected identifier or '(' before '}' token
   17 | }
      | ^
Language: C

main(a,b,i=1,x){for(scanf("%d%d",&a,&b),x=a+b;x/=10;i++);printf("%d\n",i);}

Compiler output:
main.c:1:11: error: expected ')' before '=' token
    1 | main(a,b,i=1,x){for(scanf("%d%d",&a,&b),x=a+b;x/=10;i++);printf("%d\n",i);}
      |           ^
      |           )
Language: C

main(a,b,i=1,x){for(scanf("%d%d",&a,&b),x=a+b;x=x/10;i++);printf("%d\n",i);}

Compiler output:
main.c:1:11: error: expected ')' before '=' token
    1 | main(a,b,i=1,x){for(scanf("%d%d",&a,&b),x=a+b;x=x/10;i++);printf("%d\n",i);}
      |           ^
      |           )
Language: C

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

Compiler output:
main.c:1:7: error: expected declaration specifiers or '...' before string constant
    1 | scanf("%d %d",&a,&b);
      |       ^~~~~~~
main.c:1:15: error: expected declaration specifiers or '...' before '&' token
    1 | scanf("%d %d",&a,&b);
      |               ^
main.c:1:18: error: expected declaration specifiers or '...' before '&' token
    1 | scanf("%d %d",&a,&b);
      |                  ^
Language: C

#include <stdio.h>
#include <string.h>
int main(void)
{
    int i,previous,next,digit,sum;
    char input[30];
    char* p;
    for(i = 0; i < 2; i++)
    {
        fgets(input, sizeof(input),stdin);
        p = strchr(input,'\n');
        if (p != NULL) *p = '\0';
        if(input == NULL) break;
        sscanf(strtok(input, " "),"%d",&previous);
        sscanf(strtok(NULL, " "),"%d",&next);
        sum = previous + next;
        digit = 0;
        while(sum != 0) {
            sum /= 10;
            digit++;
        }
        printf("%d\n",digit);
    }
return 0
}

Compiler output:
main.c: In function 'main':
main.c:24:9: error: expected ';' before '}' token
   24 | return 0
      |         ^
      |         ;
   25 | }
      | ~
Language: C

#include<stdio.h>

int main(void){
	int a,b,c,i,j;
	i=0;
	while(scanf("%d %d",&a,&b)!=EOF&&i<200){
		c=a+b;
		j=0;
		while(c>0){
			c/=10;
			j++;
		}
		printf("%d\n",d);
		i++;
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:13:31: error: 'd' undeclared (first use in this function)
   13 |                 printf("%d\n",d);
      |                               ^
main.c:13:31: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int main(){
  int num1,num2,sum,counti;
 while(1){
 if(scanf("%d %d",&num1,&num2)==0)break;
 sum=num1+num2;
 count=0;
 for(i=0;i<8;i++){
  if(sum>=10^i){count++;}
 printf("%d",count);
}
 return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:2: error: 'count' undeclared (first use in this function); did you mean 'counti'?
    8 |  count=0;
      |  ^~~~~
      |  counti
main.c:8:2: note: each undeclared identifier is reported only once for each function it appears in
main.c:9:6: error: 'i' undeclared (first use in this function)
    9 |  for(i=0;i<8;i++){
      |      ^
main.c:14:1: error: expected declaration or statement at end of input
   14 | }
      | ^
Language: C

# include <stdio.h>
int main(void)
{
	_int64 a,b;
	while (scanf("%I64d %I64d",&a,&b)!=EOF)
	{
		printf("%I64d\n",a+b);
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:9: error: unknown type name '_int64'; did you mean '__int64_t'?
    4 |         _int64 a,b;
      |         ^~~~~~
      |         __int64_t
Language: C

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

int main(void)
{
        int a,b;
        while(scanf("%d%d",&a,&b) != EOF)
        {
                printf("%d\n",(int)(log10((double)(a+b))+1));
        }
}
~       

Compiler output:
main.c:12:1: error: expected identifier or '(' before '~' token
   12 | ~
      | ^
Language: C

#include<stdio.h>
#include<conio.h>
int main ()
{
    int n=1,j=0,i;
    scanf("%d",&n);
    int array[100];
        if(i%n==0);
        {
            j++;
        }
        {
            if (j==2);
        }
        {
            printf("%d is prime",j);
        }
        return 0;
   }

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

int main(void)
{
  int a,b,i,sum;
  while(scanf("%d %d",&a,&b)!=EOF){
    i=1;
    sum=a+b;
    printf("%d %d",a,b);dd
    do{
      sum=sum%10;
      i++;
    }while(sum>0);
    printf("%d\n",i);
  }
  
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:25: error: 'dd' undeclared (first use in this function)
   11 |     printf("%d %d",a,b);dd
      |                         ^~
main.c:11:25: note: each undeclared identifier is reported only once for each function it appears in
main.c:11:27: error: expected ';' before 'do'
   11 |     printf("%d %d",a,b);dd
      |                           ^
      |                           ;
   12 |     do{
      |     ~~
Language: C

#include<stdio.h>

int main(){
  int a,b,d,i;
  while(1)
    {
      d=1;
      scanf("%d%d",&a,&b);
      for(i=0;i<8;1++)
	{
	  if(d<=(a+b)&&(d*10)>(a+b)){prinf("%d\n",d);break;}
	  else d=d*10;
	}
    }
}

Compiler output:
main.c: In function 'main':
main.c:9:20: error: lvalue required as increment operand
    9 |       for(i=0;i<8;1++)
      |                    ^~
main.c:11:38: error: implicit declaration of function 'prinf'; did you mean 'printf'? [-Wimplicit-function-declaration]
   11 |           if(d<=(a+b)&&(d*10)>(a+b)){prinf("%d\n",d);break;}
      |                                      ^~~~~
      |                                      printf
Language: C

#include<stdio.h>

int main(){
  int a,b,d,i,ret;
  while(scanf("%d %d",&a,&b)=EOF)
    {
      d=1;
      for(i=0;i<8;i++)
	{
	  if(a+b==0){printf("1\n");break;}
	  if(d<=(a+b) && (d*10)>(a+b)){printf("%d\n",i+1);break;}
	  else d=d*10;
	}
    }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:29: error: lvalue required as left operand of assignment
    5 |   while(scanf("%d %d",&a,&b)=EOF)
      |                             ^
Language: C

#include<stdio.h>

int main(void){
	int a,b,add,i;
	
	scanf("%d %d",&a,&b);
	add = a + b;

	for(i = 0;add == 0;i++){
		add /= 10;
	}
	printf("%d\n",i)
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:12:25: error: expected ';' before 'return'
   12 |         printf("%d\n",i)
      |                         ^
      |                         ;
   13 | 
   14 |         return 0;
      |         ~~~~~~
Language: C

#include<stdio.h>
int main(void){
    int a,b,c,i,j=1,apple;
    while(scanf("%d%d",&a,&b)!=EOF){
        c=a+b;
        for(i=0,j=1,apple=c;latte>=0;i++){
            j=10*j;
            apple=c-j;
        }
        printf("%d\n",i);
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:29: error: 'latte' undeclared (first use in this function)
    6 |         for(i=0,j=1,apple=c;latte>=0;i++){
      |                             ^~~~~
main.c:6:29: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include窶ャ <stdio.h>
#include <stdllb.h>
int main()
{
int n, i, j, temp, count, ara[201], dif[200];
printf("How many elements: ");
scanf("%d", &n);
printf("Enter now %d elements: ", n);
for(i=0; i<n; i++) {
scanf("%d", &ara[i]);
}
for(i=0; i<n; i++) {
dif[i] = abs(ara[i+1]-ara[i]);
}
printf("difference: ");
for(i=0; i<(n-1); i++) {
printf("%d ", dif[i]);
}
printf("\n");
for(j=n-1; j>=1; j--) {
for(i=0; i<j; i++) {
temp = 0;
if(dif[i]>dif[i+1]) {
temp = dif[i];
dif[i] = dif[i+1];
dif[i+1] = temp;
}
}
}
printf("Sorting of difference: ");
for(i=0; i<(n-1); i++) {
printf("%d ", dif[i]);
}
count=0;
for(i=0; i<(n-1); i++) {
if(dif[i]==i+1) count++;
}
if(count==(n-1)) printf("Jolly\n");
else printf("Not jolly\n");
return 0;
}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #include\U00007ab6\U000030e3
    1 | #include窶ャ <stdio.h>
      |  ^~~~~~~~~~~
main.c:2:10: fatal error: stdllb.h: No such file or directory
    2 | #include <stdllb.h>
      |          ^~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{

    int a,b;
    while(cin>>a>>b)
    {
        string str1;
        ostringstream convert;
        convert << (a+b);
        str1= convert.str();
        cout<<str1.size()<<endl;;
    }


   /* int num=111111110;
    string res;
    ostringstream convert;
    convert <<num;
    res=convert.str();
    cout<<res<<endl;*/
}

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

#include <iostream>
using namespace std;
int main ()
{
    int a,b;
    while (cin >> a >> b)
    {
        int count = 0;
        while (a != 0)
        {
            if(a%10 == 0)
            {
                a /=10;
                continue;
            }
            count ++;
            a /= 10;
        }
        while (b != 0)
        {
            if(b%10 == 0)
            {
                b /=10;
                continue;
            }
            count ++;
            b /= 10;
        }
        cout << count << endl;
    }
    return 0;
}

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

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
int main(void)
{
    long int a,b,c,d;
    char bb[7];
    while((scanf("%d %d",&a,&b))==2)
    {
        c= a+b;
        itoa(c,bb,10);
       d = strlen(bb);
      printf("%d\n",d);
    }
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:11:9: error: implicit declaration of function 'itoa' [-Wimplicit-function-declaration]
   11 |         itoa(c,bb,10);
      |         ^~~~
Language: C

#include <stdio.h>

int main(void) {
	int a,b;
	
	scanf("%d %d", &a, &b);
	int ans = a+b;
	
	for(int i = 0; ans > 0; i++) {
		ans /= 10;
	}
	
	printf("%d",i);
	return 0;
	
}

Compiler output:
main.c: In function 'main':
main.c:13:21: error: 'i' undeclared (first use in this function)
   13 |         printf("%d",i);
      |                     ^
main.c:13:21: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int main(void) {
	int a, b;
	while(scanf("%d %d", &a, &b) == 2) {
		printf("%d\n", strlen(sprintf("%d", a+b));
	}
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:32: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    6 |                 printf("%d\n", strlen(sprintf("%d", a+b));
      |                                ^~~~~~
main.c:2:1: note: include '<string.h>' or provide a declaration of 'strlen'
    1 | #include <stdio.h>
  +++ |+#include <string.h>
    2 | 
main.c:6:32: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
    6 |                 printf("%d\n", strlen(sprintf("%d", a+b));
      |                                ^~~~~~
main.c:6:32: note: include '<string.h>' or provide a declaration of 'strlen'
main.c:6:54: error: passing argument 2 of 'sprintf' makes pointer from integer without a cast [-Wint-conversion]
    6 |                 printf("%d\n", strlen(sprintf("%d", a+b));
      |                                                     ~^~
      |                                                      |
      |                                                      int
In file included from main.c:1:
/usr/include/stdio.h:366:44: note: expected 'const char * restrict' but argument is of type 'int'
  366 |                     const char *__restrict __format, ...) __THROWNL;
      |                     ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~
main.c:6:39: error: passing argument 1 of 'strlen' makes pointer from integer without a cast [-Wint-conversion]
    6 |                 printf("%d\n", strlen(sprintf("%d", a+b));
      |                                       ^~~~~~~~~~~~~~~~~~
      |                                       |
      |                                       int
main.c:6:39: note: expected 'const char *' but argument is of type 'int'
main.c:6:58: error: expected ')' before ';' token
    6 |                 printf("%d\n", strlen(sprintf("%d", a+b));
      |                       ~                                  ^
      |                                                          )
main.c:6:59: error: expected ';' before '}' token
    6 |                 printf("%d\n", strlen(sprintf("%d", a+b));
      |                                                           ^
      |                                                           ;
    7 |         }
      |         ~
Language: C

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

int main(void)
{
  int a,b,i,sum[200];

  for(i=0;i<200;i++){
    scanf("%d %d",&a,&b);
    sum[i]=a+b;
  }

  for(i=0;i<200;i++){
    while(sum[i]<0){
      int keta=0;
      sum[i]/=10;
      keta+=1;
    }
    printf("%d\n",keta);
  }

  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:19:19: error: 'keta' undeclared (first use in this function)
   19 |     printf("%d\n",keta);
      |                   ^~~~
main.c:19:19: note: each undeclared identifier is reported only once for each function it appears in
Language: C

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

int main(void)
{
  int a,b,i,keta,sum[200];

  for(i=0;i<200;i++){
    scanf("%d %d",&a,&b);
    sum[i]=a+b;
  }

  for(i=0;i<200;i++){
    while(sum[i]>=){
      keta=0;
      sum[i]/=10;
      keta+=1;
    }
    printf("%d\n",keta);
  }

  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:14:19: error: expected expression before ')' token
   14 |     while(sum[i]>=){
      |                   ^
Language: C

#include <stdio.h>
int digit(int x)
{
	int x,i;
	for(i=1;x/=10;i++)
	return i
}
int main()
{
	int a,b;
	while(1){
		scanf("%d %d",&a,&b);
		printf("%d",digit(a+b));
	}
	return 0;
}

Compiler output:
main.c: In function 'digit':
main.c:4:13: error: 'x' redeclared as different kind of symbol
    4 |         int x,i;
      |             ^
main.c:2:15: note: previous definition of 'x' with type 'int'
    2 | int digit(int x)
      |           ~~~~^
main.c:6:17: error: expected ';' before '}' token
    6 |         return i
      |                 ^
      |                 ;
    7 | }
      | ~
Language: C

#include <stdio.h>
int digit(int x)
{
	int x,i;
	for(i=1;x/=10;i++)
	return i;
}
int main()
{
	int a,b;
	while(1){
		scanf("%d %d",&a,&b);
		printf("%d",digit(a+b));
	}
	return 0;
}

Compiler output:
main.c: In function 'digit':
main.c:4:13: error: 'x' redeclared as different kind of symbol
    4 |         int x,i;
      |             ^
main.c:2:15: note: previous definition of 'x' with type 'int'
    2 | int digit(int x)
      |           ~~~~^
Language: C

#include<stdio.h>
int main(void)
{
  int a,b,c,count=0;

  while(scanf("%d %d",&a,&b)!=EOF){
    c=a+b;
    while(c>0){
      c/=10;
      count+=1;
    }
    printf("%d\n",count);
  }

  return 0
}

Compiler output:
main.c: In function 'main':
main.c:15:11: error: expected ';' before '}' token
   15 |   return 0
      |           ^
      |           ;
   16 | }
      | ~
Language: C

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace contest
{
    class Program
    {
        static int Main(string[] args)
        {
            int MAX = 200;

            char text_split = ' ';

            for (int i = 0; i < MAX; i++)
            {
                string read = Console.ReadLine();

                if (read == null) break;
                else
                {
                    string[] words = read.Split(text_split);

                    if( words[1] == null) break;
                    
                    int a_num = int.Parse(words[0]);
                    int b_num = int.Parse(words[1]);

                    //出力
                    int ab = a_num + b_num;
                    int count = 1;
                    while (ab >= 10)
                    {
                        ab /= 10;
                        count++;
                    }
                    Console.WriteLine("{0}", count);
                }
            }

            //Console.ReadKey();
            return 0;
        }

    }
}

Compiler output:
main.c:1:1: error: unknown type name 'using'
    1 | using System;
      | ^~~~~
main.c:2:1: error: unknown type name 'using'
    2 | using System.Collections.Generic;
      | ^~~~~
main.c:2:13: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    2 | using System.Collections.Generic;
      |             ^
main.c:3:1: error: unknown type name 'using'
    3 | using System.Linq;
      | ^~~~~
main.c:3:13: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    3 | using System.Linq;
      |             ^
main.c:4:1: error: unknown type name 'using'
    4 | using System.Text;
      | ^~~~~
main.c:4:13: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token
    4 | using System.Text;
      |             ^
main.c:6:1: error: unknown type name 'namespace'
    6 | namespace contest
      | ^~~~~~~~~
main.c:7:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
    7 | {
      | ^
Language: C++

#include <bits/stdc++.h>
    using namespace std;
    int main()
    {
        int n,m,sum,c=0;
        }
        while(scanf("%d %d",&n,&m)!=EOF){
            sum=n+m;
            if(sum==0){
                c++;
            }
            while(sum!=0){
                sum=sum/10;
                c++
            }
        }
        cout<<c;
        
    }




Compiler output:
a.cc:7:9: error: expected unqualified-id before 'while'
    7 |         while(scanf("%d %d",&n,&m)!=EOF){
      |         ^~~~~
a.cc:17:9: error: 'cout' does not name a type
   17 |         cout<<c;
      |         ^~~~
a.cc:19:5: error: expected declaration before '}' token
   19 |     }
      |     ^
Language: C++

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

string sum(string s, string t){
    reverse(s.begin(), s.end());
    reverse(t.begin(), t.end());
    
    string res;
    int carry = 0;
    int md = max(t.size(), s.size());
    for(int i=0; i<=md; i++){
        int sc = i<s.size()? s[i]-'0': 0;
        int tc = i<t.size()? t[i]-'0': 0;
        int d = sc + tc + carry;
        char nd = '0' + (d%10);
        if(i == md && nd == '0')
            continue;
        res += nd;
        carry = d/10;
    }
    reverse(res.begin(), res.end());
    return res;
}

int main(){
    string s, t;
    while(cin >> s >> t){
        cout << sum(s, t).size() << endl;
    }
    return 0;
}



Compiler output:
a.cc: In function 'std::string sum(std::string, std::string)':
a.cc:6:5: error: 'reverse' was not declared in this scope
    6 |     reverse(s.begin(), s.end());
      |     ^~~~~~~
Language: C++

using System;

class main {
  static void Main(){
    string str;
    while(true){
      str = Console.ReadLine();
      if(str == null) break;
      string[] strs = str.Split();
      Console.Write(strs[0].Length);
      Console.WriteLine(" " + strs[1].Length);
    }
  }
}


Compiler output:
a.cc:1:7: error: expected nested-name-specifier before 'System'
    1 | using System;
      |       ^~~~~~
a.cc:14:2: error: expected ';' after class definition
   14 | }
      |  ^
      |  ;
a.cc: In static member function 'static void main::Main()':
a.cc:5:5: error: 'string' was not declared in this scope
    5 |     string str;
      |     ^~~~~~
a.cc:7:7: error: 'str' was not declared in this scope; did you mean 'std'?
    7 |       str = Console.ReadLine();
      |       ^~~
      |       std
a.cc:7:13: error: 'Console' was not declared in this scope
    7 |       str = Console.ReadLine();
      |             ^~~~~~~
a.cc:8:17: error: 'null' was not declared in this scope
    8 |       if(str == null) break;
      |                 ^~~~
a.cc:9:14: error: expected primary-expression before ']' token
    9 |       string[] strs = str.Split();
      |              ^
a.cc:10:21: error: 'strs' was not declared in this scope
   10 |       Console.Write(strs[0].Length);
      |                     ^~~~
Language: C++

#include <iostream>

using namespace std;

int main(){
	int a,b;
	while(eof){
	cin>>a>>b;
int c=0;
int n;
n=a+b;
while (n>0){
	c++;
	n=n/10;
}

cout<<c<<endl;
}
}




Compiler output:
a.cc: In function 'int main()':
a.cc:7:15: error: 'eof' was not declared in this scope; did you mean 'feof'?
    7 |         while(eof){
      |               ^~~
      |               feof