foo.c:2:11: error: stray '\357' in program
    2 | int main (）
      |           ^
foo.c:2:12: error: stray '\274' in program
    2 | int main (）
      |            ^
foo.c:2:13: error: stray '\211' in program
    2 | int main (）
      |             ^
foo.c:3:1: error: expected declaration specifiers or '...' before '{' token
    3 | {
      | ^
foo.c:4:9: error: stray '\357' in program
    4 |  int a[]，b[];
      |         ^
foo.c:4:10: error: stray '\274' in program
    4 |  int a[]，b[];
      |          ^
foo.c:4:11: error: stray '\214' in program
    4 |  int a[]，b[];
      |           ^

[Hydro](https://hydro.ac)提供评测服务