/in/foo.c: In function 'main':
/in/foo.c:5:5: warning: useless type name in empty declaration
     int ;
     ^~~
/in/foo.c:15:16: warning: too many arguments for format [-Wformat-extra-args]
         printf("Yes\n", num);
                ^~~~~~~
/in/foo.c:17:16: warning: too many arguments for format [-Wformat-extra-args]
         printf("No\n", num);
                ^~~~~~