Including Assembly into C++

[FlatAssembler]

Wasn't there a really simple command for inline assembly inside the .cpp which would even allow using the variables from the c++ namespace directly in the assembly code?

There is. It's the "asm" command. It is heavily platform dependent, given the fast progress of CPU's. Usefull at some specific applications. In my old job, there was an old table cutting machine, that cutted plastic with a shape you could export from coreldraw, but the software was not supported. So I used a few pieces of code to bootstrap that with asm. I could only use it in an old processor, but it worked like a charm.

I think using those inline assembly extensions just makes things more compicated, since then, at least in GCC, you can't read from and write into the same variable.