Do I need to reimplement all the constructor of a base class even if a derived class has no member variables?

Question

Let's assume I have a base class

class Base
{
public:
    Base();
    Base(int i, double j);
    Base(int i, double j, char ch);

    virtual void print();

private:
    int m;
    double l;
    char n;
};

And I want to derive a class which overrides the print function but apart from that is exactly the same as the base class.

class Derived : public Base
{
public:
    void print();
};

Is there a way I can use all the constructors of the base class on the derived class without me rewriting all of them for the Derived class?

Answer 1

Since C++11, you may use using for that:

class Derived : public Base
{
public:
    using Base::Base; // use all constructors of base.

    void print() override;
};

Live demo