Displaying message in various computer languages

Rohan Sakhale 3/24/2011 code-examplephpjavacpp

# Summary

So by starting as a simple post toward my contribution for programming, lets see how messages can be displayed in different programming languages.

# Hello World in "C"

Using the printf() function from stdio.h library we write the following instructions for computer to print a message "Hello World

#include<stdio.h>  //including Header File
/**
 * Main is the entry point for our program
 */
void main()
{
	//whatever is displayed in double quotes is printed on the console
	printf("Hello World");    
}

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# Hello World in "C++"

Using the cout object from iostream.h library we write the following instructions for computer to print a message "Hello World".

Here the cout object uses an operator called insertion ('<<') which is used to print everything within it on the console.

#include<iostream.h>  //including Header File 
/**
 * Main is the entry point for our program
 */ 
void main()
{
	//whatever is displayed in double quotes is printed on the console.  
	cout << "Hello World";   
}

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# Hello World in Java

Class System comes with various console objects like out, in, err which can be used for various purpose. The System library comes from java.lang package which is default imported by Java everytime it runs.

The out object from System class helps to redirect output towards the console.

import java.lang.*;  // importing java lang library
class Main
{ 
	public static void main(String [] args) 
	{ 
		System.out.print("Hello World");  
		//To end the message with a new line we use println() method
		System.out.println("This statement will add a new line at the end");
		System.out.print("This will be printed on new line");
	}
}

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# Hello World in C#

The class System has various objects predefined in C# library, so we use System library & gain the class called "Console" which is attached to the console i.e. Screen & invoke static method called write() using that Console class-name.

Basic functionality is to print everything within quoutes.

using System;
namespace FirstProgram
{
	class Program
	{
		static void main(String [] args)
		{
			Console.Write("Hello World");
			//to end the message with new line we use WriteLine() method
			Console.WriteLine("This should add a new line at the end");
			Console.Write("This message ends with new line");
		}
	}
}

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# Hello World in PHP

PHP is a powerful language for web, in-order to print any message we just use echo keyword & whatever typed in double or single quotes is displayed as message. Both single & double quotes has separate meaning & we will come across it some other day.

A php program is always enclosed with "<?php STATMENTS HERE ?>"

<?php
 echo 'Hello World';
?>

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So we end up here now, I hope you have come to know how to display message in 5 different languages, I will come back with more languages very soon.