/in/foo.cc: In function 'void huxi(int (*)[100], int)':
/in/foo.cc:31:6: warning: unused variable 'cnt' [-Wunused-variable]
  int cnt=0;
      ^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:45:6: warning: unused variable 'i' [-Wunused-variable]
  int i,j;
      ^
/in/foo.cc:45:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j;
        ^