C++ Tutorial

C++ is a powerful programming language built on top of C. It adds classes and objects, a rich standard library and many modern features, while staying very fast.

C++ is used to build games and game engines, web browsers, banking and trading systems, desktop software and code for robots and devices.

Why Learn C++?

• It is one of the fastest languages, so it is used where speed matters
• It teaches you both low-level ideas (memory) and high-level ideas (classes)
• It is popular in competitive programming and university courses
• Once you know C++, learning Java, C# or Rust is much easier

What You Will Learn

• How to compile and run a C++ program
• Output with cout, input with cin, variables and data types
• Operators, strings, if...else, switch and loops
• Arrays and vectors
• Functions, references, classes and objects

A First Example

#include <iostream>
using namespace std;

int main() {
  cout << "Hello from C++!" << endl;
  return 0;
}

Hello from C++!

The first chapter explains every line of this program.

Check Yourself

What to Learn After C++

If you have not learned C yet, it helps you understand what C++ does under the hood. For building business apps, look at C# or Java, which share much of the same syntax.