Introduction

C++ is an extension of C, both language have similar syntax.
The main difference is C++ supports OOPS i.e. classes & objects, while C doesn't.

#include <iostream>
using namespace std;

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

Line 1 : #include <iostream> is a header file library that lets us work with input and output objects, such as cout (used in line 5).
- Header files add functionality to C++ programs.
Line 2 : using namespace std; means that we can use names for objects and variables from the standard library.
Line 4 : int main() { This is a function. Any code inside its curly brackets {} will be executed.
Line 6 : return 0; A return value of 0 usually indicates that the program terminated successfully. A non-zero value typically signifies an error or an abnormal termination.
- Not mandatory just a good practice.
- Every C++ statement ends with a semicolon ;

#include <iostream>

int main() {
    std::cout << "Hello World";
    return 0;
}