/in/foo.c: In function 'main':
/in/foo.c:9:2: warning: implicit declaration of function 'FindiMax' [-Wimplicit-function-declaration]
  FindiMax(a,n);
  ^~~~~~~~
/in/foo.c: At top level:
/in/foo.c:11:14: error: unknown type name 'a'
 int FindiMax(a[],int n)
              ^