C++ Introduction

🔹 What is C++?

C++ is a powerful, high-performance object-oriented programming language. It is an extension of C, developed by Bjarne Stroustrup at Bell Labs in the early 1980s.

It supports:

• Procedural and object-oriented programming

• Low-level memory manipulation

• System-level and application-level development

🔹 Why Learn C++?

• Combines the power of C with modern object-oriented features

• Used in game development, operating systems, browsers, and more

• Highly efficient and fast

• Rich library support and portability

• Foundation for many competitive programming problems

🔹 Features of C++

• Object-Oriented (supports classes, objects, inheritance, etc.)

• Statically typed and compiled language

• High performance

• Supports both procedural and object-oriented paradigms

• Allows low-level manipulation via pointers

🔹 How to Get Started with C++

✅ Requirements:

• A C++ compiler like g++

• An IDE or text editor (Code::Blocks, VS Code, etc.)

🔹 First C++ Program

#include <iostream>
using namespace std;

int main() {
    cout << "Hello, World!";
    return 0;
}

🔸 Explanation:

• #include <iostream> — Header for input/output

• using namespace std; — Avoids prefixing std:: with functions like cout

• main() — Program execution starts here

• cout — Outputs to the console

• return 0; — Ends the program

🔹 Compiling and Running C++ Program

✅ Using g++:

g++ program.cpp -o program
./program

Q1. Print your name in C++

Q2. Add two numbers.

Q3. Use comments in a C++ program.

Q4. Input and output a number.

Q5. Multiply two floating-point numbers.