Welcome to C++

C++ is a powerful, general-purpose language that gives you low-level control over memory while still supporting high-level abstractions. It powers game engines, operating systems, embedded systems, and high-performance applications.

What You'll Learn

Lesson	Topics
Lesson 1	Variables, data types, printing, and user input
Lesson 2	If/else conditionals, for/while loops
Lesson 3	Functions, parameters, return types

C++ vs Other Languages

Feature	C++	Python	Java
Speed	Very fast (compiled)	Slower (interpreted)	Fast (JVM)
Memory control	Manual (new/delete)	Automatic	Automatic (GC)
Syntax	More verbose	Very concise	Verbose
Use cases	Games, OS, embedded	Data science, scripting	Enterprise, Android

Setting Up

You can run C++ online at:

• Replit — create a new C++ project
• OnlineGDB — quick online compiler

note

Every C++ program starts with #include <iostream> and has a main() function — that is where execution begins.