Give an example with defining Set Variable method

I want to integrate one agent written by C++ to trace something through Dynacetrace.

I look through your repo : https://github.com/Dynatrace/OneAgent-SDK-for-C

I couldn't find some example about?

How to define variables regarding Dynatrace through onesdk_stub_set_variable ?

Can you provide an example to set home, tenant, tenantToken and server through onesdk_stub_set_variable ?

I hope you can help me about it.