Language: C

 #include <stdio.h>
   

   int main(void){
     char check=1;
     int i,j,k,m,n;
     int num[150000];
     num[0] = 2;
　　　k=0;
       for(i=3;i<=1000000;i=i+2){
          for( j=0; j<=k; j++){  
           if(i%num[j] == 0){
               check =0; break;
           }
           if(!check )
              break;
              }
           if(check)｛
　　　　　　　K++;
           num[k]=i;
          }else
            check =1;
}

                  
　　  while( (scanf("%d",&n);) != EOF){
             for(m=0; m<=k; m++){
                 if( num[m]<=n)
                      break;
                 }
                 printf("%d\n",m+1);
             }
       return 0;
}  
      

Compiler output:
main.c: In function 'main':
main.c:9:1: error: stray '\343' in program
    9 | <U+3000><U+3000><U+3000>k=0;
      | ^~~~~~~~
main.c:9:3: error: stray '\343' in program
    9 | <U+3000><U+3000><U+3000>k=0;
      |         ^~~~~~~~
main.c:9:5: error: stray '\343' in program
    9 | <U+3000><U+3000><U+3000>k=0;
      |                 ^~~~~~~~
main.c:19:1: error: stray '\343' in program
   19 | <U+3000><U+3000><U+3000><U+3000><U+3000><U+3000><U+3000>K++;
      | ^~~~~~~~
main.c:19:3: error: stray '\343' in program
   19 | <U+3000><U+3000><U+3000><U+3000><U+3000><U+3000><U+3000>K++;
      |         ^~~~~~~~
main.c:19:5: error: stray '\343' in program
   19 | <U+3000><U+3000><U+3000><U+3000><U+3000><U+3000><U+3000>K++;
      |                 ^~~~~~~~
main.c:19:7: error: stray '\343' in program
   19 | <U+3000><U+3000><U+3000><U+3000><U+3000><U+3000><U+3000>K++;
      |                         ^~~~~~~~
main.c:19:9: error: stray '\343' in program
   19 | <U+3000><U+3000><U+3000><U+3000><U+3000><U+3000><U+3000>K++;
      |                                 ^~~~~~~~
main.c:19:11: error: stray '\343' in program
   19 | <U+3000><U+3000><U+3000><U+3000><U+3000><U+3000><U+3000>K++;
      |                                         ^~~~~~~~
main.c:19:13: error: stray '\343' in program
   19 | <U+3000><U+3000><U+3000><U+3000><U+3000><U+3000><U+3000>K++;
      |                                                 ^~~~~~~~
main.c:18:21: error: '\U0000ff5b' undeclared (first use in this function)
   18 |            if(check)｛
      |                     ^~
main.c:18:21: note: each undeclared identifier is reported only once for each function it appears in
main.c:18:23: error: expected ';' before 'K'
   18 |            if(check)｛
      |                       ^
      |                       ;
   19 | 　　　　　　　K++;
      |               ~        
main.c:21:12: error: 'else' without a previous 'if'
   21 |           }else
      |            ^~~~
main.c: At top level:
main.c:26:1: error: stray '\343' in program
   26 | <U+3000><U+3000>  while( (scanf("%d",&n);) != EOF){
      | ^~~~~~~~
main.c:26:3: error: stray '\343' in program
   26 | <U+3000><U+3000>  while( (scanf("%d",&n);) != EOF){
      |         ^~~~~~~~
main.c:26:7: error: expected identifier or '(' before 'while'
   26 | 　　  while( (scanf("%d",&n);) != EOF){
      |       ^~~~~
main.c:26:30: error: expected identifier or '(' before ')' token
   26 | 　　  while( (scanf("%d",&n);) != EOF){
      |                              ^
main.c:33:8: error: expected identifier or '(' before 'return'
   33 |        return 0;
      |        ^~~~~~
main.c:34:1: error: expected identifier or '(' before '}' token
   34 | }
      | ^