Solved

Question

apps and programs are made from multiple languages I think? ( c++ and Java, for example) what is the overall extent of c++ alone?

Answer 1

This is actually very common.

http://stackoverflow.com/questions/1886086/writing-a-program-in-2-languages

Answer 2

To my knowledge, there is no compiler capable of handling 2 distinctively different languages at a time. So I don't know about "programs are made of multiple languages C++ and java"