Day 20

C++ Syntax

Let's break up the following code to understand it better:

Example

#include <iostream>

using namespace std;

int main() {

  cout << "Hello World!";

  return 0;

} 

Example explained

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.