The factorial of a nonnegative integer n is written as n! (pronounced n factorial) and is defined as follows: n! = n (n 1) (n 2) 1 (for values of n greater than or equal to 1) and n! = 1 (for n = 0) For example, 5! = 5 * 4 * 3 * 2 * 1, which is 120. Write a program in C++ that reads a nonnegative integer and computes and prints its factorial. Must follow the example please.