How to turn C code or Masm into a set of bytes?

Question

C++ / C#

Hello, tell me how you can compile c or mas code without turning it into an executable file or dll. That is, I want all instructions to be translated into bytes without adding anything extra (PE header, etc.)
I want to overwrite other bytes of an already executable file with these bytes.
It just takes too long to overwrite the instructions in ollydbg each time.

Answer 1

www.vividmachines.com/shellcode/shellcode.html

Answer 2

Just compile without linking.

Answer 3

Well, since OllyDbg appears here, why not look at the Multiline Ultimate Assembler plugin ?

Answer 4

I solved the problem. I use fasm, it translates assembler commands into bytes without any problems, without adding anything extra