foo.c: In function 'main':
foo.c:53:9: error: 'printf\U0000ff08' undeclared (first use in this function); did you mean 'printf'?
   53 |         printf（"\n"）
      |         ^~~~~~~~
      |         printf
foo.c:53:9: note: each undeclared identifier is reported only once for each function it appears in
foo.c:53:17: error: expected ';' before string constant
   53 |         printf（"\n"）
      |                 ^~~~
      |                 ;

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