Hello, world

Hello World is the canonical 'shortest example program' in any given programming language; a program which simply prints 'hello, world', and then terminates.

The first version appeared in "A Tutorial Introduction to the Programming Language B":

main( ) {
 extrn a, b, c;
 putchar(a); putchar(b); putchar(c); putchar('!*n');
}

a 'hell';
b 'o, w';
c 'orld';

It was popularized with one in the 'C Tutorial' in UNIX V6:

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

External links

• S. C. Johnson, B. W. Kernighan, The Programming Language B
  • B. W. Kernighan, A Tutorial Introduction to the Programming Language B
• Brian W. Kernighan, Programming in C - A Tutorial