Please don't put the entire question in the title.
What do you mean by, "use C/C++"?
C and C++ are separate languages - or are you trying to make a system with some parts in C, and some parts in C++ ?
You'll need to describe in detail what you did to get to the point of receiving those errors...
A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
