foo.c: In function 's':
foo.c:4:6: warning: unused variable 'cnt' [-Wunused-variable]
    4 |  int cnt = 0;
      |      ^~~
foo.c: In function 'main':
foo.c:28:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   28 |  scanf("%d %d %d", &x, &y, &z);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:31:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   31 |   scanf("%d", &a[i]);
      |   ^~~~~~~~~~~~~~~~~~
foo.c:34:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   34 |   scanf("%d", &b[i]);
      |   ^~~~~~~~~~~~~~~~~~
foo.c:37:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   37 |   scanf("%d", &c[i]);
      |   ^~~~~~~~~~~~~~~~~~

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