bool Keyword in C#

Keywords are the words in a language that are used for some internal process or represent some predefined actions. bool is a keyword that is used to declare a variable which can store Boolean values true or false. It is an alias of System.Boolean.

Bool Keyword occupies 1 byte (8 bits) in the memory. There are only two possible values of bool i.e. true or false.

Syntax:

bool variable_name = value;

Example:

Input: true

Output: answer: False
        Size of a byte variable: 1

Input: false

Output: Type of answer: System.Boolean
        answer: True
        Size of a bool variable: 1

Example 1:

// C# program for bool keyword
using System;
using System.Text;

    class GFG
    {
        static void Main(string[] args)
        {
            // bool variable declaration
            bool answer = false;

            // to print value
            Console.WriteLine("answer: " + answer);

            // to print size of a bool
            Console.WriteLine("Size of a bool variable: " + sizeof(bool));

        }
    }

Output:

answer: False
Size of a bool variable: 1

Example 2:

// C# program for bool keyword
using System;
using System.Text;

namespace geeks {

class GFG {

    static void Main(string[] args)
    {
        // bool variable declaration
        bool answer = true;

        // to print type of variable
        Console.WriteLine("Type of answer: " + answer.GetType());

        // to print value
        Console.WriteLine("answer: " + answer);

        // to print size of a bool
        Console.WriteLine("Size of a bool variable: " + sizeof(bool));

        // hit ENTER to exit
        Console.ReadLine();
    }
}
}

Output:

Type of answer: System.Boolean
answer: True
Size of a bool variable: 1