/in/foo.c: In function 'main':
/in/foo.c:21:16: warning: too many arguments for format [-Wformat-extra-args]
         printf("yes,\n", num);
                ^~~~~~~~
/in/foo.c:23:16: warning: too many arguments for format [-Wformat-extra-args]
         printf("no,\n", num);
                ^~~~~~~