/in/foo.c: In function 'main':
/in/foo.c:9:27: error: stray '\357' in program
  printf("sum is %d\n",sum)；
                           ^
/in/foo.c:9:28: error: stray '\274' in program
  printf("sum is %d\n",sum)；
                            ^
/in/foo.c:9:29: error: stray '\233' in program
  printf("sum is %d\n",sum)；
                             ^
/in/foo.c:10:2: error: expected ';' before 'return'
  return 0;
  ^~~~~~