C++ program. Write a program that uses while loops to perform the following steps:

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.

Program layout:

int main()

{

//a

validateUserInput();

//b

oddNumbers();

//c

sumEvenNumbers();

//d

displaySquareNumbers();

//e

sumSqureOddNumbers();

//f

displayUppercaseLetters();

}

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

***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).

OUTPUTS:

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

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

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

Enter two positive integer numbers. First number must be less than the second number you enter Enter numbers: 1 9

Odd integers between 1 and 9 are: 1 3 5 7 9

Sum of even integers between 1 and 9 = 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 1 and 9 = 165

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

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

Enter two positive integer numbers. First number must be less than the second number you enter Enter numbers: 11 15

Odd integers between 11 and 15 are: 11 13 15

Sum of even integers between 11 and 15 = 26

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 11 and 15 = 515

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 > n