I feel that the often seen C/C++ doesn't really describe my skills in my CV. So I'm planning to separate it into advanced C++ knowledge and mediocre C skills.
Do you think this is confusing for the reader? She could think: "C is a subset of C++, so what is this guy trying to tel me?" Well, what I'm trying to tell is: I have done several real world C++ projects while pure C projects where just a hobby thing. Do you agree that a skilled C++ programmer not necessarily is a qualified C guy or do you think that this switch is done easily?