I'm continuing my discussion of how to implement and use virtual functions in C. The basic approach is to implement each class as a C…

For some time now, I’ve been explaining how to implement and use virtual functions in C.[1],[2] The basic approach is to implement each class as…

C doesn't really support inheritance, but it offers alternative ways to mimic inheritance. For more than a year now, I've been explaining how to implement…

Implementing pure virtual functions as null pointers is simple but probably not robust enough for most applications. Last year, I wrote several columns on how…

Pure virtual functions provide a way to avoid defining base class member functions that have no meaningful implementation. For much of this year, I've been…

Each class in a hierarchy of polymorphic objects should have a function that initializes its vptr properly. For much of this year, I've been discussing…

Virtual function calls work properly only if the vptrs and vtbls are initialized properly. C++ does this automatically, while C makes you do it manually….

Once more unto the breach, Dan tries to dispel the notion that C++ is a purely object-oriented language in which all classes must use virtual…

Although C doesn’t provide native support for virtual functions, you can emulate virtual functions in C if you attend to all the details. Last month,…