Question

I know that c++ code should be compiled and linked by g++, not gcc.
But why gcc can still compile c++ source code in spite of lots of c++ keywords in the source.

By the way, I found that I even can build a shared library by gcc with all c++ code. Why?

Answer 1

g++ is gcc, it just automatically links to the standard C++ libraries.

If your g++ code depends on the standard libraries (things in the std namespace), you can

1. use the g++ command, and its all automatic
2. use gcc command, and specify the C++ standard libraries explicitly (-lstdc++)