Hello world c++ using namespace std

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Printing "Hello, World!" is the first program in C++. Here, this prints "Hello, World" on the console (output screen).

To start learning C++, it is the first step to print sometime on the screen.

C++ Program to Print "Hello, World!"

Let us see the first C++ program that prints "Hello, World!" −

// First C++ program #include<iostream> using namespace std; int main() { cout << "Hello, World!"; return 0; }

Output

This program will print "Hello, World!" on the output screen.

The output will be −

Hello, World!

Parts of C++ "Hello, World!" Program

Here is the breakdown of the above code and all elements used in the above code −

1. Comment Section (// First C++ program)

Comments are used to specify a textual line that is not supposed to be executed when we compile the code.

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The compiler ignores the line, and proceeds to the next line. These are used for better readability and explanation of code in the comments section.

This is the comment −

// First C++ program

2. Preprocessor Directive (#include <ios

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