foo.c:2:6: warning: return type of 'main' is not 'int' [-Wmain]
    2 | void main()
      |      ^~~~
foo.c: In function 'main':
foo.c:4:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
    4 | {
      | ^
foo.c:13:7: error: stray '\357' in program
   13 |    j++；
      |       ^
foo.c:13:8: error: stray '\274' in program
   13 |    j++；
      |        ^
foo.c:13:9: error: stray '\233' in program
   13 |    j++；
      |         ^
foo.c:16: error: expected '{' at end of input
   16 | }
      | 

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