#include <iostream>
#include <cmath>
using namespace std;
int main()
{

   double num = 7; 
   double square = num*num;
   double cube = square*num;

   double exponent = 4.0;

   double result = pow(num, exponent);

   cout << "The square of 7 is " << square << endl;
   cout << "The cube of 7 is " << cube << endl;
   cout << "The 4th power of 7 is " << result << endl;

   return 0;
}