Browse Definitions :
Definition

Hello World

Contributor(s): FOG

Hello World is a simple program that, when run, displays the message: Hello World . Fittingly, the Hello World program has long been the new programmer's induction into a myriad of programming languages. A project at the Association for Computing Machinery (ACM) of Louisiana Tech collected all the Hello World program examples they could find -- and discovered 204.

Here's what the Hello World program looks like in Pascal :

   program Hello;
   begin     (* Main *)
      writeln ('Hello, world!')
   end.      (* Main *)
The output should look like: Hello, world!

No one knows exactly why Hello World has stood the test of time so well. The most likely historical explanation is simply that a short program like Hello World once allowed the programmer to make sure that a language's compiler , development environment, and run-time environment were correctly installed. Because this involved a lot of work, a very simple program was used first to test things out. According to Wikipedia, the tradition of using the phrase "Hello, world" as the test message was influenced by an example program in the book "The C Programming Language", by Brian Kernighan and Dennis Ritchie.

This was last updated in September 2005

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • compliance audit

    A compliance audit is a comprehensive review of an organization's adherence to regulatory guidelines.

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

SearchSecurity

  • Cybercrime

    Cybercrime is any criminal activity that involves a computer, networked device or a network.

  • data breach

    A data breach is a confirmed incident in which sensitive, confidential or otherwise protected data has been accessed and/or ...

  • zero-day (computer)

    A zero-day vulnerability, also known as a computer zero day, is a flaw in software, hardware or firmware that is unknown to the ...

SearchHealthIT

SearchDisasterRecovery

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

  • business continuity software

    Business continuity software is an application or suite designed to make business continuity planning/business continuity ...

  • business continuity policy

    Business continuity policy is the set of standards and guidelines an organization enforces to ensure resilience and proper risk ...

SearchStorage

  • business impact analysis (BIA)

    Business impact analysis (BIA) is a systematic process to determine and evaluate the potential effects of an interruption to ...

  • RAID (redundant array of independent disks)

    RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks to ...

  • dedicated cloud

    A dedicated cloud is a single-tenant cloud infrastructure, which essentially acts as an isolated, single-tenant public cloud.

Close