need help coding this in C programming language

Lab #2

Name your program lab2.c

Start by asking the user to enter a number

between 1 and 15

Check if the user has complied.

Keep asking the user for a number between 1

and 15 until the user complies.

Then ask if recursion is desired or not.

If recursion is not desired call a function to calculate

N! (where N is the number entered)

If recursion is required call a recursive function to

calculate N! (where N is the number entered)