Chapter 4.5, Problem 4.18CP

Explanation of Solution

Boolean variables:

Boolean variables are referred as “bool”, commonly used as flags which gives intimation whether the condition exists.

• It can reference any of the two values, either “True” or “False”.
• Flag is used to remember something or leaves a sign for the other parts of the program.
• The condition does not exist when the flag is set to false.
• The condition exists when the flag is set to true.

Example Program:

//Include libraries

using System;

//Declare the namespace

namespace ConsoleApp2

{

  //Define the class name

        class Program

        {

    //Define the Main() function

            static void Main(string[] args)

            {

                //Declare and assign the variables

                int number = 6;

                bool flag_val;

                //Check to check the number is odd or even

                if (number % 2 == 0)

                    //set flag variable as True

                    flag_val = true;

   ;&#x...