C++ Hello World Program

In this C++ programming tutorial, we are going to write a simple C++ or CPP hello world program. This is a simple C++ or CPP program to print hello world.
To understand this, you should have basic knowledge of C++ Programming. Click here to access the C++ tutorial.

C++ Hello World Program

This is the first C++ program of our C++ programming tutorial series. In this c++ program, we will print a simple C++ program “hello world“.
This is a very simple program of C++ programming language. if is often used to introduce new programming language to the newbie programmers.

C++ Hello World Program:

Example

// This is simple C++ program
#include <iostream>
using namespace std;
int main() {
    // Write C++ code here
    cout << "Hello World!";
    return 0;
}

Output:

Hello World!

Understand the Working Of Above Program:

• In the first line, we have written a simple line “This is a simple C++ program” after // symbol. That means this line refers to the comment in C++ programming. Comments are used to describe the code so that users can understand the code easily.
  In the C++ program, Comments are completely ignored by the C++ compiler.
• #include
  The #include is a preprocessor directive that is used to include files in the C++ program. As you can see in the above C++ program, we have import iostream file by using #include preprocessor.
  iostream file allows using of cout in the C++ Program.

• using namespace std
  Namespaces in C++ is used to organize too many classes so that it can handle the application.
• int main() {..}
  A valid C++ program must have the main() function. The curly bracket indicates the start and end of the function.

• cout << “Hello world!”;
  cout is used to print the string on the screen or print the value of the variable on the string.
• return 0;
  The return 0 statement in C++ program refers to the exit status of the program.

Note: In C++ programming, Semicolon ( ; ) is used to terminate the line.

Conclusion:

So That, In this tutorial you have learned how to print the hello world programs in C++. Hello World is a simple program to introduced C++ to newbie programmers. In a later C++ program example, we will see a more complex C++ program.

I hope this article will help you to understand how to write a simple C++ program. If you like this article, please comment and share it with your friends who want to learn C++ programming from scratch to advanced.

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