Ways to show your co-programmers that some methods are not yet implemented in a class when programming in C++

Question

What approaches can you use when:

• you work with several (e.g. 1-3) other programmers over a small C++ project, you use a single repository
• you create a class,

Answer 1

You can use pure virtual functions (= 0;) for inherited classes, or more commonly, declare them but not define them. You can't call a function with no definition.