foo.c: In function 'main':
foo.c:16:17: error: 'scanf\U0000ff08' undeclared (first use in this function); did you mean 'scanf'?
   16 |                 scanf（"%d", &arr1[i]);
      |                 ^~~~~~~
      |                 scanf
foo.c:16:17: note: each undeclared identifier is reported only once for each function it appears in
foo.c:16:24: error: expected ';' before string constant
   16 |                 scanf（"%d", &arr1[i]);
      |                        ^~~~
      |                        ;
foo.c:16:38: error: expected statement before ')' token
   16 |                 scanf（"%d", &arr1[i]);
      |                                      ^

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