Write a program that uses while loops to perform the following steps in c++ languge

a. Prompt the user to input two positive integers. Variables: firstNum and secondNum (firstNum must be less than secondNum) (use while loop); create a user-defined function called validateUserInput() to validate the user's input. Use Call-by-Value. validateUserInput() is a value returning function.

b. Output all odd numbers between firstNum and secondNum. (use while loop); create a user-defined function called oddNumbers(). Use Call-by-Value. oddNumbers() is a void function.

c. Output the sum of all even numbers between firstNum and secondNum. (use while loop); create a user-defined function called sumEvenNumbers(). Use Call-by-Value. Declare a variable called sumEven in the main() for the sumEvenNumbers(). sumEvenNumbers() is a value returning function. Use sumEven to hold a returned value.

d. Output the numbers and their squares between 1 and 10. (use while loop): create a user-defined function called displaySquareNumbers(). Call-by-Value. displaySquareNumbers() is a void function.

e. Output the sum of the square of the odd numbers between firstNum and secondNum. (use while loop); create a user-defined function called sumSqureOddNumbers(). Use Call-by-Value. Declare a variable called sumSquareOdd in the main(), for the sumSqureOddNumbers(). sumSqureOddNumbers() is a value returning function. Use sumSquareOdd to hold a returned value.

f. Output all uppercase letters. (use while loop); create a user-defined function called displayUppercaseLetters(). Use Call-by-Value. displayUppercaseLetters() is a void function.

***Collect the user's inputs in the main() and pass them to the other functions.

***Per item d and f, make sure you pass a value to the functions from main().

***Validate the user's inputs; in case the user types characters.

***Allow the user to use upper case or lower case.

***Allow the user to repeat the program. (use while loop).

***No for loop(s) and do while loop(s).

***Do not use any pre-defined functions that were not covered in the class.

***Use only topics that were covered in the class.

***No object-oriented programming.

***Match the output below (OUTPUTS section).

The output should be:

Enter two positive integer numbers. First number must be less than the second number: Enter numbers: 8 a

Incorrect Input. Please try again.

Enter two positive integer numbers. First number must be less than the second number: Enter numbers:

**************************************************************************************

Enter two positive integer numbers. First number must be less than the second number: Enter numbers: a 8

Incorrect Input. Please try again.

Enter two positive integer numbers. First number must be less than the second number: Enter numbers:

**************************************************************************************

Enter two positive integer numbers. First number must be less than the second number: Enter numbers: 8 2

First number must be less than the second number! Please try again.

Enter two positive integer numbers. First number must be less than the second number: Enter numbers:

**************************************************************************************

Enter two positive integer numbers. First number must be less than the second number: Enter numbers: -2 8

No negative numbers! Please try again.

Enter two positive integer numbers. First number must be less than the second number: Enter numbers:

**************************************************************************************

Enter two positive integer numbers. First number must be less than the second number you enter Enter numbers: 2 8

Odd integers between 2 and 8 are: 3 5 7

Sum of even integers between 2 and 8 = 20

Number Square of Number 1 1 2 4 3 9 4 16 5 25 6 36 7 49 8 64 9 81 10 100

Sum of the squares of odd integers between 2 and 8 = 83

Upper case letters are: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Do you want to repeat this program? y/n > y