Like here https://www.codeproject.com/articles/108830/inheritance-and-polymorphism-in-c https://www.codeproject.com/articles/108830/inheritance-and-.... For exa

Like here https://www.codeproject.com/articles/108830/inheritance-and-polymorphism-in-c https://www.codeproject.com/articles/108830/inheritance-and-.... For examples of this you can check gnu tools like gcc or gdb, or glib-based libraries or the kernel source.