/in/foo.cc:17:22: error: stray '\357' in program
 for(j = 2;j <=sqrt(i)；j++)
                      ^
/in/foo.cc:17:23: error: stray '\274' in program
 for(j = 2;j <=sqrt(i)；j++)
                       ^
/in/foo.cc:17:24: error: stray '\233' in program
 for(j = 2;j <=sqrt(i)；j++)
                        ^
/in/foo.cc:22:8: error: stray '\357' in program
 if(flag） cout << " " << i;
        ^
/in/foo.cc:22:9: error: stray '\274' in program
 if(flag） cout << " " << i;
         ^
/in/foo.cc:22:10: error: stray '\211' in program
 if(flag） cout << " " << i;
          ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:17:25: error: expected ';' before 'j'
 for(j = 2;j <=sqrt(i)；j++)
                         ^
/in/foo.cc:22:12: error: expected ')' before 'cout'
 if(flag） cout << " " << i;
            ^~~~