foo.c:3:6: warning: return type of 'main' is not 'int' [-Wmain]
    3 | void main()
      |      ^~~~
foo.c: In function 'main':
foo.c:16:9: warning: too many arguments for format [-Wformat-extra-args]
   16 |  printf("Yes\n",m);
      |         ^~~~~~~
foo.c:18:9: warning: too many arguments for format [-Wformat-extra-args]
   18 |  printf("No\n",m);
      |         ^~~~~~
foo.c:19:9: warning: 'return' with a value, in function returning void [-Wreturn-type]
   19 |  return 0;
      |         ^
foo.c:3:6: note: declared here
    3 | void main()
      |      ^~~~
foo.c:9:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    9 |  scanf("%d",&m);
      |  ^~~~~~~~~~~~~~

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