/in/foo.cc: In function 'int main()':
/in/foo.cc:11:8: warning: unused variable 'x' [-Wunused-variable]
  int n,x,k;
        ^
/in/foo.cc:17:9: warning: 'imax' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<k;
         ^
/in/foo.cc: In function 'int FindiMax(int*, int)':
/in/foo.cc:28:9: warning: 'imax' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return imax;
         ^~~~