I'm playing with a Z80 SBC, and I was trying to run the old Star Trek game on it. I had a C source file, and used a makefile to try to compile it. It failed due to various library issues, but I just checked the folder (I had done this earlier today) and there's an EXE of the Star Trek game sitting there. I don't know how I compiled it for Windows. I didn't use any CC or GCC commands. I'm just confused.