C++ Program to Print Hello World

Write a simple C++ Program to Print Hello World with an example. Every program starts with a #include statement to include the preprocessor directives. Here, #include<iostream> includes the iostream file that helps us to use the cout statement. 

In this C++ program, using namespace std helps to import the std namespace and print hello world.

#include<iostream>

using namespace std;

int main()
{
	cout << "Hello World";
	
	return 0;
}
C++ Program to Print Hello World

If you don’t want to import namespace std (using namespace std;), then remove it and use C++ std::cout.

#include<iostream>

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

Simple C++ Program to Print Hello World Using Functions

#include<iostream>

using namespace std;

void disply_helloworld() 
{
	cout << "Hello World";
}

int main()
{	
	disply_helloworld();
	
	return 0;
}
Hello World!

In this example, we created a separate class (Message) that contains a method (disply_helloworld()) to print messages. Next, we created an instance of that class and called that method from out of the main program.

#include<iostream>

using namespace std;

class Message
{
	public: void disply_helloworld() {
		cout << "Hello World";
	}
};

int main()
{
	Message msg;
	
	msg.disply_helloworld();
	
	return 0;
}
Hello World

About Suresh

Suresh is the founder of TutorialGateway and a freelance software developer. He specialized in Designing and Developing Windows and Web applications. The experience he gained in Programming and BI integration, and reporting tools translates into this blog. You can find him on Facebook or Twitter.