"Hello, World!" Program

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'''The "Hello, World!" program''' is a computer program that outputs or displays the message "Hello, World!". A program like this is very simple in most programming languages and is often used in many tutorials to illustrate the basic syntax of a programming language. It is also often the first program written by people learning to code. "Hello, World" is also traditionally used in a sanity test to make sure that a computer language is correctly installed, and the operator understands how to use it.

History
While small test programs have existed since the development of programmable computers, the tradition of using the phrase "Hello, World!" as a test message was influenced in the seminal 1978 book The C Programming Language. The example program written in that book prints "hello, world", and was inherited from a 1974 Bell Laboratories internal memorandum by Brian Kernighan, Programming in C: A Tutorial: main { printf("hello, world\n"); } It is believed that in earlier programming, people used "hello" instead of "hello, world". This was done to supposedly save data space (the first computers had less than 16 kilobytes).

HTML:

<!DOCTYPE html> This is a title Hello, World! JavaScript:

window.alert("Hello, World!"); C++:

using namespace std;
 * 1) include

int main { cout << "Hello, World!"; return 0; } Python: print("Hello World") PHP: 