How do I write a code

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C++

using the player, Junior Player and Senior Player class declarations below attempt the question

class Player
{
    string name;
    string PlayerId;
public:
    Player();
    Player(string, string);
    void Register(string, string);
    void Display();
    void GivePoint();
};
class JuniorPlayer :public Player
{
    int bonusAmount;
public:
    void Display();
    JuniorPlayer incrementBonus();
}

What I have tried:

a. Make function GivePoint() a pure virtual function in class Player. Only rewrite Player class declaration for this.
b. Once the Player class is abstract what single change you must do in JuniorPlayer class to make it non abstract. Only rewrite JuniorPlayer class declaration.

c. Write constructor that would Call from JuniorPlayer class the Player class parameterized constructor and also give values to JuniorPlayer class data members and Player class data members.

d. Replace the incrementBonus() function in JuniorPlayer class with overloaded form of increment operator prefix form. Remember to set bonusAmount to 0 in the parameter less constructor.