Boolean Variable in C++ Programming
C++ Basic Concepts
In this lesson, we will understand what is Boolean Variable and how to declare it in C++ programming, with the help of some examples. We will also play a quiz at the end.
What is Boolean Variable
In C++ program a boolean variable can store value either true or false. To declare a variable of type boolean we use the keyword bool.
Syntax of Declaring Character Variable in C++
Here bool is used for declaring Boolean data type and variable_name is the name of variable (you can use any name of your choice for example: a, b, c, alpha, etc.) and ; is used for line terminator (end of line).
Now let's see some examples for more understanding.
Declare a boolean variable x.
Declare 3 boolean variables x, y, and z to assign the values true, false and true respectively.
bool x=true, y=false, z=true;
Declare a boolean variable x and assign the value false and change it value to true in the next line.
bool x = false; x = true; //now the new value of x is true