Language subset for printing

[Adam D. Ruppe]

On Saturday, 21 December 2013 at 01:09:31 UTC, Casper Færgemand 
wrote:
> How big of a subset of D would a compiler need to use writeln?

writeln is pretty complex and using it pulls in a lot of Phobos 
too.

> Is there possibly an easier way to write to stdout? Calling 
> printf in some C code perhaps?

Just call printf in D!

import core.stdc.stdio;
void main() {
    printf("hello world!\n");
}