the First hello world in computer literature

Occured in Kernighan's 1972 Tutorial Introduction to the Language B

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

http://en.wikipedia.org/wiki/Hello,_world