Booleans

Let’s discuss boolean (or logical) data type in more detail. The variable type of bool can take only two values - True (1) or False (0). The boolean can be used when we want to check some logical conditions in our code. For example, you want to know if the variable x is bigger than y to use this information by looking for the difference between them.

For this reason, there are some logical operators you can use in comparison:

Use them in boolean expressions, which return the output as a boolean value: True. If the condition holds or False otherwise.

For example:


              12345
            
int x = 5;
int y = 4;
cout << (x > y) << endl; // will return true, because 5 is higher than 4
cout << (x <= 5) << endl; // will return true, because x is equal to 5
cout << ("hello" == "Hello"); // will return false, because these string aren't the equal

The program returned 1 where the statement was true and 0 where was false.

Everything was clear?

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Section 3. Chapter 1

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Course Content

Introduction to C++

1. Basics

Get Started Output New Lines Comments

2. Variables

Types of Variables Identifiers User Input Strings Simple Math Not Simple Math Increment (Prefix and Postfix)Constant Challenge

3. Conditional Statements

Booleans If Expression More Logical Operators Else Expression Else If Expression Short Forms Challenge Switch Statement The Keyword Default

4. Loops

While Loop Do/While Loop For Loop Break/Continue Statements

5. Intro to Arrays

Basic Concept of the Array Loops in Arrays Manipulations with Arrays Challenge