/in/foo.cc: In function 'int main()':
/in/foo.cc:16:6: warning: unused variable 'ok1' [-Wunused-variable]
  int ok1=0;
      ^~~
/in/foo.cc:45:34: warning: 'Min' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if (Min>0) printf("%d",(int)ceil(Min));
                              ~~~~^~~~~
/in/foo.cc:46:43: warning: 'Max' may be used uninitialized in this function [-Wmaybe-uninitialized]
     else if (Max<0) printf("%d",(int)floor(Max));
                                      ~~~~~^~~~~