sumNCubes(n)

1. int sumN(int n) returns the sum of the first n natural numbers.
2. int sumNCubes(int n) returns the sum of the cubes of the first n natural numbers.
3. Then test these functions with the following program.

   
   int main()
   {
       int N;
       cout << "Please input a natural number N -- ";
       cin >> N;
       cout << endl;
       cout << sumN(N) << '\t' << sumNCubes(N) << endl;
       return 0;
   }
   
   

4. Combine your function and the above main() in a single .cpp file and submit it.
5. The program may run as follows:

   
   Please input a natural number N -- 5
   
   15      225