The Hello World Collection

"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");
}

http://www.roesler-ac.de/wolfram/hello.htm