Course Content

C++ Introduction

1. Getting Started

Introduction to C++ Programming Entry Point of a C++ Program Understanding the Standard Library and Files in C++Exploring C++ Preprocessor Directives Writing Your First C++ Program

2. Introduction to Operators

Mastering C++ Operators Arithmetic Operators Practice Relational Operators Logical Operators

3. Variables and Data Types

Data Types Understanding Variables Numerical Data Types Introduction to String Introduction to Arrays Working with the Array

4. Introduction to Program Flow

Conditional Statements Ternary Operator Switch Statement While Loop For Loop Practicing With Loops

5. Introduction to Functions

What are Functions?Type of Functions Return Statement in Functions Simple Function Practice

Logical Operators

You can use logical operators AND (&&), OR (||) and NOT (!) to evaluate multiple conditions simultaneously.

AND (&&) returns true only if both conditions are true. For example, checking if an account balance is sufficient and the withdrawal amount is positive;
OR (||) returns true if at least one condition is true. For example, checking if a balance is sufficient or the user has a credit card;
NOT (!) negates a condition, turning true into false and vice versa. For example, checking if an account is not locked.

Imagine you need to create conditions for user authentication. Let’s explore some scenarios.

Condition	Authorization Status	State of Password, Login, Phone Call, and Internet
Password AND login are correct	Authorized (`true`)	Password: `true` Login: `true` Phone Call: N/A Internet: N/A
Password AND login are correct, OR with a phone call identification	Authorized (`true`)	Password: `true` Login: `false` Phone Call: `true` Internet: N/A
There is NO internet	Not Authorized (`false`)	Password: N/A Login: N/A Phone Call: N/A Internet: `false`

logical_and

logical_or

logical_not


              12345678910
            
#include <iostream>

int main()
{
    // Using AND (&&) operator for password and login
    //     Login is correct = `true`
    //     Password is correct = `true`
    std::cout << "User authorized (password AND login correct)" 
              << (true && true) << std::endl;
}

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Thanks for your feedback!

Section 2. Chapter 4

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Course Content

C++ Introduction

1. Getting Started

Introduction to C++ Programming Entry Point of a C++ Program Understanding the Standard Library and Files in C++Exploring C++ Preprocessor Directives Writing Your First C++ Program

2. Introduction to Operators

Mastering C++ Operators Arithmetic Operators Practice Relational Operators Logical Operators

3. Variables and Data Types

Data Types Understanding Variables Numerical Data Types Introduction to String Introduction to Arrays Working with the Array

4. Introduction to Program Flow

Conditional Statements Ternary Operator Switch Statement While Loop For Loop Practicing With Loops

5. Introduction to Functions

What are Functions?Type of Functions Return Statement in Functions Simple Function Practice

Logical Operators

You can use logical operators AND (&&), OR (||) and NOT (!) to evaluate multiple conditions simultaneously.

AND (&&) returns true only if both conditions are true. For example, checking if an account balance is sufficient and the withdrawal amount is positive;
OR (||) returns true if at least one condition is true. For example, checking if a balance is sufficient or the user has a credit card;
NOT (!) negates a condition, turning true into false and vice versa. For example, checking if an account is not locked.

Imagine you need to create conditions for user authentication. Let’s explore some scenarios.

Condition	Authorization Status	State of Password, Login, Phone Call, and Internet
Password AND login are correct	Authorized (`true`)	Password: `true` Login: `true` Phone Call: N/A Internet: N/A
Password AND login are correct, OR with a phone call identification	Authorized (`true`)	Password: `true` Login: `false` Phone Call: `true` Internet: N/A
There is NO internet	Not Authorized (`false`)	Password: N/A Login: N/A Phone Call: N/A Internet: `false`

logical_and

logical_or

logical_not


              12345678910
            
#include <iostream>

int main()
{
    // Using AND (&&) operator for password and login
    //     Login is correct = `true`
    //     Password is correct = `true`
    std::cout << "User authorized (password AND login correct)" 
              << (true && true) << std::endl;
}

Everything was clear?

Thanks for your feedback!

Section 2. Chapter 4

C++ Introduction

Logical Operators

1. Which logical operator is used to check if both conditions are true?

2. Which logical operator is used to check if at least one condition is true?

3. What does the `!` operator do?

C++ Introduction

Logical Operators

1. Which logical operator is used to check if both conditions are true?

2. Which logical operator is used to check if at least one condition is true?

3. What does the `!` operator do?

C++ Introduction

Logical Operators

1. Which logical operator is used to check if both conditions are true?

2. Which logical operator is used to check if at least one condition is true?

3. What does the ! operator do?

C++ Introduction

Logical Operators

1. Which logical operator is used to check if both conditions are true?

2. Which logical operator is used to check if at least one condition is true?

3. What does the ! operator do?

3. What does the `!` operator do?

3. What does the `!` operator do?