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This is the default introductory program to a new ProgrammingLanguage. It simply prints the text string "Hello World\n".

HellWorld? is not really meant as a sample program, though. What you learn from creating a Hello World program is how to use the language tools: it's a first exercise in entering, compiling and running a program on a paticular system, and it might make you go find the documentation on the I/O library in some cases. In many very high level languages, it looks exactly the same.

As a demonstration of the feel of a language, PPR:WardNumber is a much better problem. 99 Bottles of Beer on the Wall can also be adequate.

Some examples of HelloWorld in different ProgrammingLanguages:

BASIC

PRINT "Hello World\n"

C

  1. include <stdio.h>

int main(int argc, char **argv) {

printf("Hello World\n"); return 0;

}

C++

  1. include <iostream>

int main (int argc, char *argv[]) {

std::cout << "Hello World" << std::endl; return 0;

}

COBOL

I'm not sure how much of this is serious or facetious...

000100 IDENTIFICATION DIVISION. 000200 PROGRAM-ID. HELLOWORLD. 000300 DATE-WRITTEN. 02/05/96 21:04. 000400* AUTHOR BRIAN COLLINS 000500 ENVIRONMENT DIVISION. 000600 CONFIGURATION SECTION. 000700 SOURCE-COMPUTER. RM-COBOL. 000800 OBJECT-COMPUTER. RM-COBOL. 000900 001000 DATA DIVISION. 001100 FILE SECTION. 001200 100000 PROCEDURE DIVISION. 100100 100200 MAIN-LOGIC SECTION. 100300 BEGIN. 100400 DISPLAY " " LINE 1 POSITION 1 ERASE EOS. 100500 DISPLAY "HELLO, WORLD." LINE 15 POSITION 10. 100600 STOP RUN. 100700 MAIN-LOGIC-EXIT. 100800 EXIT.

Java

public class HelloWorld {

public static void main(String[] args) {

System.out.println("Hello World");

}

}

Linux x86 AssemblyLanguage

.data .align 4

message
.string "Hello World\n"

message_len = . - message

.text .align 4 .globl _start

_start
movl $0x4, %eax movl $0x1, %ebx movl $message, %ecx movl $message_len, %edx int $0x80 movl $0x1, %eax xorl %ebx, %ebx int $0x80
Perl
print join('', pack("V4", (0x6c6c6548,0x6f77206f,0xa646c72)));

Sorry, someone is being facetious. Of course, it's:

print "Hello World\n";

Python
print "Hello World"
UserRPL (for the HP48 Calculator)
<< "Hello World" MSGBOX >>
PHP
<?php echo ("Hello World\n") ; ?>

And the list could go on and on.

See also: