Comment by Nathaniel Ng on "What's the hardest language to write "Hello World" in?"

Writing "hello world" on punch cards.

But for something that's typed into a computer via a keyboard (and in a language in common use):

Any OpenCL hello world code where you're trying to run on GPUs or FPGAs: two examples - OpenCL hello world for GPUs, or this one from Intel for FPGAs.
Windows API hello world

Search Hashnode