Hello World - the very first program

"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 428 Hello World programs in many more-or-less well known programming languages, plus 63 human languages.

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