My first thought, too. Quite surprising, though, at least as Wikipedia claims¹, this (except for the lack of "\n") was the exact "hello world" code from the fi

My first thought, too. Quite surprising, though, at least as Wikipedia claims¹, this (except for the lack of "\n") was the exact "hello world" code from the first edition of K&R. ____ ¹) http://en.wikipedia.org/wiki/C_(programming_language)#.22Hello.2C_world.22_example http://en.wikipedia.org/wiki/C_(programming_language)#.22Hel... and I don't have any copy of the first edition.