uh inferno's 8c compiles .exe file?
no, 8c doesn't produce any executables, it leaves that to the linker, 8l. by default, 8l produces plan 9 executables, but the -H option can produce some other formats. the man page doesn't list windows exe but you could look in the source. look for "Nt"; inferno's name for windows, and "PE"; the executable format for modern ms windows, or "MZ" in case it still uses the old windows exe format.