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"Hello World" is the first program one usually writes when learning a new programming language.

The first Hello World program appeared in chapter 1.1 of the first edition of Kernighan & Ritchie's original book about C, "The C Programming Language", in 1978 and read like this:

main() {
printf("hello, world\n");
}

Since then, Hello World has been implemented in just about every programming language on the planet. This collection includes 410 Hello World programs in many more-or-less well known programming languages, plus 63 human languages.

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This is a vigilant way of concealing nerdiness while travelling.

hello world!

touring places whilst typing computer programs in my head. harhar.

hello world!