Introduction

C++ is a general purpose programming language developed by Bjarne Stroustrup. It was created as an extension of the C language to include additional features such as classes and object oriented programming.

C++ is widely used because it is fast, efficient, and gives developers control over system resources. It is commonly used in applications where performance is important.

The syntax of C++ is simple and similar to C, but it introduces new elements like streams for input and output.

A C++ program consists of the following parts

Header files Main function Statements

#include <iostream> is a header file library that allows us to work with input and output objects such as cout

using namespace std allows us to use names from the standard library without writing std:: before them

int main() is the main function where the program starts executing

cout is used to output data to the screen

return 0 ends the program

The cout object is used together with the insertion operator << to display output.

You can also print on separate lines.

The cin object is used to get user input.

cin is used to take input from the user

The >> operator is used to extract input

cout is used to display output

Comments are used to explain code and make it more readable.

Single line comment

Multi line comment

A C++ program is written in a text file and then compiled using a compiler.

The compiler converts the code into machine language, which the computer can understand and execute.

Write a C++ program that takes your name as input and prints a greeting message.