How to extract a .7z file within C++?

[nuderobmonkey]

What library need I use? I searched me through the net, but I couldn't find out which dev-package I need, nor the API documentation.

[deleted account xyzzy]

Took me all of 30 microseconds to find links:

https://duckduckgo.com/?q=7-zip+c%2B%2B+library&t=ffsb&ia=web

including the LZMA SDK (Software Development Kit) at the main 7-Zip site:

https://www.7-zip.org/sdk.html