C++ program on visual studio.

Complete this program by adding a recursive function to calculate n-factorial (n!). Recall that n! is n * (n - 1) * (n - 2) * ... 2 * 1. Note that a special case is that 0! is defined as 1. Be sure to check that your answers are correct. You should find they are wrong for values of n > 12; they will be for the looping version, which uses an int. Explain why that is in the comments at the top of the program. This program is in the lecture slides... if you're stuck, look at the slides (in Course Materials), but don t copy/paste... write it yourself from scratch