/in/foo.cc:16:18: error: stray '\357' in program
  printf("%.2f",s)；
                  ^
/in/foo.cc:16:19: error: stray '\274' in program
  printf("%.2f",s)；
                   ^
/in/foo.cc:16:20: error: stray '\233' in program
  printf("%.2f",s)；
                    ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:17:2: error: expected ';' before 'return'
  return 0;
  ^~~~~~