Create a user defined function that calculates the factorial of a given integer. (without pointers)

Your program should accomplish the following: a. You must create a user defined function, with a single input and a return type of integer. -The integer input will be the value of n. b. In the main, ask user for the value of n, then call the function in the main program to calculate the factorial and print to screen. c. Inside of your user defined function, calculate the factorial utilizing a loop. Start your loop at 1, and set the initial value of the factorial to 1 (Due to: 0! = 1). make sure to 'return' the calculated value back to your main program (integer) d. Code should be uploaded as a .txt file, with a screenshot of your console showing your factorial output. e. Provide comments on the basic structure of your loop and how it calculates the factorial.

3. Create a user defined function that calculates the factorial of a given integer. (with pointers)