C++

Part of the Fundamentals section of Coddy's C++ journey — lesson 1 of 74.

C++ is a powerful, high-performance programming language used in everything from game development and operating systems to scientific computing, known for its efficiency and flexibility.

Here is what the starter code does:

#include <iostream> — loads the library that lets you print text to the screen.

int main() { ... } — this is the main function, where every C++ program starts running.

cout << "Hello, World!"; — prints the text Hello, World! to the screen.

When you run the code, you will see Hello, World! appear in the output.

Challenge

Beginner

Press the run code button to run your first C++ program.

The code uses #include <iostream> to enable input/output, defines the main() function where the program starts, and prints a message to the screen using std::cout.

When you run it, you should see: Hello C++!

Try it yourself

#include <iostream>
int main() {
    std::cout << "Hello C++!";
    return 0;
}

All lessons in Fundamentals

1Introduction

C++Hello World!Comments Basic Program Structure

4Operators Part 1

Arithmetic Operators Modulo Operator Increment/Decrement Post Increment/Decrement Arithmetic Shortcuts Comparison Operators String Comparison

7Input/Output Basics

cout Statement cin Statement String Input Recap - Till 120 Recap - True or False

10Functions

Declare a Function Parameters Return Types Function Overloading Recap - Sigma Function Recap - Validation Function Void Functions

13Final Challenges

Number Pattern Pattern Finder Student Grade Calculator