/in/foo.c:2:10: error: stray '\357' in program
 int main(）
          ^
/in/foo.c:2:11: error: stray '\274' in program
 int main(）
           ^
/in/foo.c:2:12: error: stray '\211' in program
 int main(）
            ^
/in/foo.c:3:1: error: expected declaration specifiers or '...' before '{' token
 {
 ^
/in/foo.c:7:9: error: stray '\357' in program
 y1=x1+x2；
         ^
/in/foo.c:7:10: error: stray '\274' in program
 y1=x1+x2；
          ^
/in/foo.c:7:11: error: stray '\233' in program
 y1=x1+x2；
           ^
/in/foo.c:8:9: error: stray '\357' in program
 y2=x1*x2；
         ^
/in/foo.c:8:10: error: stray '\274' in program
 y2=x1*x2；
          ^
/in/foo.c:8:11: error: stray '\233' in program
 y2=x1*x2；
           ^
/in/foo.c:9:4: error: stray '\303' in program
 y3=×1%x2；
    ^
/in/foo.c:9:5: error: stray '\227' in program
 y3=×1%x2；
     ^
/in/foo.c:9:10: error: stray '\357' in program
 y3=×1%x2；
          ^
/in/foo.c:9:11: error: stray '\274' in program
 y3=×1%x2；
           ^
/in/foo.c:9:12: error: stray '\233' in program
 y3=×1%x2；
            ^
/in/foo.c:11:9: error: stray '\357' in program
 return 0；
         ^
/in/foo.c:11:10: error: stray '\274' in program
 return 0；
          ^
/in/foo.c:11:11: error: stray '\233' in program
 return 0；
           ^