How to create exe without any programm, only with coding.

Answer 1

That's a complex task... You'd need to write it in machine language (binary), that your processor and Windows understands. And I'm not even sure how you would do such a thing, but machine language is how.

Answer 2

You wouldn't actually have to do it all in machine language as is being implied, but your highest-level language option would be a form of assembly, you would need to understand binary very well, know the executable format, and you'd have to somehow deal with the Windows API as Jamie said.

While it's possible to build programs in assembly or machine language still, it's not at all ideal or realistic for anything beyond something very simple because you will spend far more time debugging every little part of it than you would in a higher-level language.