C++ program, please comment it out as much as possible. Thanks

8. Write a program to calculate the factorial by means of a function. Note: The result will not be accurate for relatively larger numbers with the built-in C++ data types. We will implement the accurate one later with arrays Expected Output Expected Output: Enter a number for factorial computation and press ENTER: 5 5! (by Factorial Function) is 120 Enter a nurber for factorial computation and press ENTER: 23 23! (by Factorial Function) is 25852016738884978000000 Enter a nurber for factorial computation and press ENTER: 38 38! (by Factorial Function) is 523022617466601040000000000000000000000000000