Write a program that uses while loops to perform the following steps. a. Create a user-defined function called Validate_User_Input() to prompt the user to input two positive integers and validate the user’s input. Validate_User_Input() is a value returning function; doesn’t accept any arguments and returns First_Num and Second_Num. Variables: First_Num and Second_Num (First_Num must be less than Second_Num). (use while loop to validate and repeat).b. Create a user-defined function called Odd_