foo.c: In function 'main':
foo.c:9:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long int *' [-Wformat=]
    9 |         scanf("%d", &x);
      |                ~^   ~~
      |                 |   |
      |                 |   long int *
      |                 int *
      |                %ld

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