C++ Programming Language

Last Updated : 12 Sep, 2025

C++ is a programming language known for its fast speed, low level memory management and is often taught as first programming language.

Why Learn C++?

C++ is often taught as a foundational language to aspiring programmers, but it is much more than that:

C++ is used in making operating systems, embedded systems, graphical user interfaces and nowadays in High Frequency Trading (HFT) systems.
It supports both low-level and high-level features such as manual memory management and Object Oriented Programming respectively.
Syntax similarity with C, Java, and C# makes it easier to switch languages.
C++ provides one of the fastest execution speeds among high level languages, which can be a deciding factor in Competitive Programming or high-performance applications.

Example Program

The below code shows the simplest C++ program that you can run to print some text on the console screen.

C++

#include <iostream>
using namespace std;
int main() {
    cout << "Hello World";
    return 0;
}

Output

Hello World

This C++ tutorial is designed to provide a guide for easy and efficient learning of both core and advanced concepts of C++. Each concept is explained with simple illustrations and practical code examples that can be executed easily. This tutorial also provides quizzes in each section to test your understanding. Let's start!

C++ Fundamentals

This section guides you through the basic concepts of C++ programming. It covers topics that teaches you to write your first program, manage data, perform different operations and control the flow of the program.

Introduction
Identifiers
Keywords
Variables
Data Types
Quiz: Basics | Variables and Data Types
Operators
Basic Input / Output
Quiz: Operator | Input Output
Conditional Statements
Loops
Quiz: Control Statements | Loops

C++ Function

Functions allow users to divide the program into multiple blocks each performing a specific task. This section teaches you how to work with functions to write a modular and reusable code.

Compound Data Types

Compound data types are created from the built-in data types. This section guides you through important compound data types such as array, strings, pointer and structures that helps in managing complex real-world data.

Dynamic Memory Management

C++ allows the low-level memory manipulation using pointers and dynamic memory allocation/deallocation operators. This section guides you through the basis of dynamic memory management.

Object Oriented Programming (OOP) in C++

This section covers key concepts of Object-Oriented Programming (OOP) in C++ such as classes, objects, encapsulation, inheritance, polymorphism, and abstraction.

C++ Standard Template Library (STL)

This section covers Standard Template Library (STL) which is an in-built library that provides a set of commonly used data structures such as vectors, lists, stacks, queues, maps, etc. and algorithms that enhance productivity and performance.

Exception Handling in C++

Exception handling are the techniques to handle runtime errors efficiently. This section covers how to handle exceptions to prevent crashes and improve the reliability of applications.

File Handling in C++

File handling allows programs to store and retrieve data from files. This section introduces file handling in C++ using streams. It covers reading from and writing to files using streams.

Advanced C++

This section covers advanced concepts in C++ such as move preprocessor, multithreading, etc. Mastering these topics allows developers to write efficient, high-performance C++ applications.

C++ Skill Assessments

Test what you have learnt through this C++ using a series of our Skill Assessment Test.

C++ Interview Questions

Quickly prepare yourself for C++ interviews with the help of our carefully curated list of commonly asked interview questions.

Important Links

Introduction to C++

Introduction to C++

First C++ Program

Variables in C++

Data Type in C++

Type Conversion C++

Logical Operators

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