CPP Introduction

C++ Tutorial

💻 CPP Introduction – Beginner Guide

C++ is a powerful, high-performance programming language used for system software, application development, game engines, competitive programming, and real-time systems.

It combines procedural programming (like C) with object-oriented programming (OOP) concepts.

1️⃣ What is C++?

  • A general-purpose programming language

  • Extension of the C language

  • Supports OOP + low-level memory control

  • Compiled language (fast execution)

📌 Developed by Bjarne Stroustrup (1980s)

2️⃣ Why Use C++?

✔ Very fast & efficient
✔ Close to hardware (memory control)
✔ Supports OOP (classes, objects)
✔ Widely used in industry
✔ Strong foundation for learning other languages

3️⃣ Where is C++ Used?

  • 🖥 Operating Systems

  • 🎮 Game Development (Unreal Engine)

  • 🚗 Embedded & IoT systems

  • 🧠 Competitive Programming

  • 📊 High-performance applications

  • 💻 Desktop software

4️⃣ Key Features of C++ ⭐

  • Object-Oriented Programming (OOP)

  • Low-level memory manipulation

  • Rich Standard Library (STL)

  • Portable & fast

  • Supports multiple paradigms:

    • Procedural

    • Object-Oriented

    • Generic

5️⃣ C vs C++ (Quick Comparison)

Feature C C++
OOP ❌ No ✔ Yes
Classes ❌ ✔
STL ❌ ✔
Memory control ✔ ✔
Speed Fast Very Fast

6️⃣ First C++ Program ⭐


 

Output

Hello, C++!

7️⃣ Structure of a C++ Program

  1. #include → Header files

  2. main() → Program execution starts here

  3. Statements → Instructions

  4. return 0 → Successful execution

8️⃣ Basic Concepts You’ll Learn

  • Variables & Data Types

  • Operators

  • Input / Output (cin, cout)

  • Control statements (if, loop)

  • Functions

  • Arrays & Strings

  • Pointers & Memory

  • OOP (Class, Object, Inheritance)

9️⃣ Advantages of C++

✔ High performance
✔ Object-oriented design
✔ Reusable code
✔ Large community
✔ Used in real-world systems

🔟 Limitations of C++

❌ Complex syntax
❌ Manual memory management
❌ Steeper learning curve
❌ No automatic garbage collection

📌 Common Interview Questions

Q1. What is CPP?
👉 A general-purpose, object-oriented programming language.

Q2. Who developed C++?
👉 Bjarne Stroustrup

Q3. Is C++ compiled or interpreted?
👉 Compiled

Q4. Does C++ support OOP?
👉 Yes

🔥 Real-Life Use Cases

✔ Game engines
✔ Operating systems
✔ Embedded software
✔ Financial systems
✔ Competitive coding

✅ Summary

  • C++ is a fast, powerful programming language

  • Supports OOP + low-level programming

  • Used in games, systems, and high-performance apps

  • Core language for engineering students & interviews

  • Strong base for learning Java, Python, Rust

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