Size of a library and the executable

Question

I have a static library *.lib created using MSVC on windows. The size of library is say 70KB. Then I have an application which links this library. But now the size of the final

Answer 1

Disclaimer: It's been a long time since I dealt with static linking, so take my answer with a grain of salt.

You wrote: I was thinking it should add directly to the executable size and final exe size should be more than that?

Naive linkers work exactly this way - back when I was doing hobby development for CP/M systems (a LONG time ago), this was a real problem.

Modern linkers are smarter, however - they only link in the functions referenced by the original code, or as required.