/in/foo.c:2:2: error: invalid preprocessing directive #inclulde; did you mean #include?
    2 | #inclulde<math.h>
      |  ^~~~~~~~
      |  include
/in/foo.c: In function 'pernum':
/in/foo.c:23:5: warning: 'main' is normally a non-static function [-Wmain]
   23 | int main()
      |     ^~~~
/in/foo.c:35:1: error: expected declaration or statement at end of input
   35 | }
      | ^
/in/foo.c:37: warning: control reaches end of non-void function [-Wreturn-type]
/in/foo.c: At top level:
/in/foo.c:23:5: warning: 'main' defined but not used [-Wunused-function]
   23 | int main()
      |     ^~~~