foo.c: In function 'main':
foo.c:14:10: warning: too many arguments for format [-Wformat-extra-args]
   printf("Yes\n", num);
          ^~~~~~~
foo.c:16:10: warning: too many arguments for format [-Wformat-extra-args]
   printf("No\n", num);
          ^~~~~~
foo.c:5:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &num);
  ^~~~~~~~~~~~~~~~~

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