foo.c: In function 'main':
foo.c:11:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
   11 |         scanf("%d",b);
      |                ~^  ~
      |                 |  |
      |                 |  int
      |                 int *
foo.c:11:9: warning: 'b' is used uninitialized [-Wuninitialized]
   11 |         scanf("%d",b);
      |         ^~~~~~~~~~~~~

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