/in/foo.c: In function 'main':
/in/foo.c:13:10: warning: too many arguments for format [-Wformat-extra-args]
   printf("Yes\n",n);
          ^~~~~~~
/in/foo.c:15:10: warning: too many arguments for format [-Wformat-extra-args]
   printf("No\n",n);
          ^~~~~~
/in/foo.c:14:2: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
  else
  ^~~~
/in/foo.c:16:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
   return 0;
   ^~~~~~