Introduction

C++ is one of the most widely used programming languages in the world. It powers game engines, browsers, operating systems, trading systems, compilers, and embedded firmware — almost every domain where performance matters. It is also one of the most feature-rich languages ever designed, which gives it a reputation for complexity that discourages many programmers from learning it.

This book takes a different approach. Rather than surveying the entire language at once, it teaches C++ one concept at a time through working examples. Each chapter shows you something concrete — a data type, a class feature, a standard library tool — explains it line by line, and gives you enough context to use it in your own programs.

A brief history

C++ was created by Bjarne Stroustrup at Bell Labs starting in 1979. His goal was to add object-oriented features to C without sacrificing C's performance. The language was standardized by ISO in 1998 (C++98), then significantly modernized in 2011 (C++11), 2014, 2017, and 2020. Each edition made C++ safer, more expressive, and easier to use correctly.

The C++11 standard was a turning point. It introduced move semantics, lambda expressions, smart pointers, auto, range-based for, and threading support — features that transformed how C++ is written day to day. Modern C++ (C++11 and later) is a substantially different experience from the C++98 code you might find in older textbooks and tutorials.

What version this book uses

All examples target C++17, which is the practical baseline for new projects today. Compilers that fully support it include GCC 7+, Clang 5+, and MSVC 2017+. Where a feature requires C++20, the chapter says so explicitly.

What you will learn

• Setting up a compiler and building your first program
• Variables, types, casts, and enumerations
• Control flow: if/else, switch, loops
• Functions, overloading, lambdas
• Namespaces, arrays, vectors, strings, and formatting
• Pointers, references, and memory management
• Smart pointers and RAII
• Classes, constructors, operator overloading, move semantics
• Inheritance, polymorphism, and abstract classes
• Templates, concepts, and generic programming
• The Standard Library: containers, algorithms, iterators
• File I/O, threading, and synchronization
• Error handling with exceptions and std::optional
• Preprocessor directives and build systems

How to read this book

Each chapter is self-contained. If you already know variables and control flow, skip ahead to functions or classes. If you are completely new to C++, read in order — each chapter builds on vocabulary introduced before it.

The only prerequisite is some prior programming experience. You do not need to know C, but familiarity with loops and functions in any language will help.

Let's get started.