Add c++ library?

I download a library containing a couple of .hh and .cc files like mylib.hh but i don't know in which folder i should paste the files so that i can use it.





and should i write #include%26lt;mylib%26gt; or #include "mylib.hh" in my c++ program?

Add c++ library?
if its a .h file you should #include "whatevs.h", if its a library within c++ its #include%26lt;iostream%26gt;