What are constructors in C++ inheritance?

Can you explain how constructors work in C++ inheritance?

Sure! In C++, constructors are special member functions that are called when an object of a class is created. In inheritance, the constructor of the base class is called before the constructor of the derived class.

What happens if the base class constructor has parameters?

If the base class constructor has parameters, you need to explicitly call it from the derived class constructor using an initializer list.

Can you give me an example of that?

Of course! Here's a simple example:

class Base {
public:
    Base(int x) { /*...*/ }
};

class Derived : public Base {
public:
    Derived(int x) : Base(x) { /*...*/ }
};

What if I don't call the base class constructor?

If you don't call the base class constructor, the default constructor will be called automatically, if it exists. If there is no default constructor, it will result in a compilation error.