foo.c: In function 'main':
foo.c:6:19: error: expected ')' before '\U0000ff0c'
    6 |         scanf("%d"，&a);
      |              ~    ^~
      |                   )
foo.c:6:17: warning: format '%d' expects a matching 'int *' argument [-Wformat=]
    6 |         scanf("%d"，&a);
      |                ~^
      |                 |
      |                 int *

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