Incomplete pages in C++ use their own incomplete-cpp tag.
I've looked at some of the C rules and recommendations, and here are my
recommendations 
for copying them across to C++.
INT00-A - needs reworking for C++.
INT07-A - needs reworking for C++.
INT30-C - needs reworking for C++.
INT35-C - needs reworking for C++.
INT37-C - needs reworking for C++.
That's as far as I got.
When you copy this rule over to the C++ side:
FIO34-C. Use int to capture the return value of character IO functions
Be sure to add something about istream::get() which return int values, not char values.
Add to the C++ standard rules marked with exportable-c++.
Update references to C (eg C99) to references to C++
Under 'Implmeentation-Specific Details', test compliance with various C++ compilers (update from C compilers)
Make sure code examples illustrate valid C++ practices (except when illustrating a particular bad example)