/in/foo.cc: In function 'int pow1(long long unsigned int, long long unsigned int)':
/in/foo.cc:8:11: warning: unused variable 'base' [-Wunused-variable]
  ull re=1,base=st;
           ^~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:29:17: warning: format '%u' expects argument of type 'unsigned int', but argument 2 has type 'long long int' [-Wformat=]
  printf("%u",ant);
                 ^