Question

c++

Part 1 Consider using the following Card class as a base class to implement a hierarchy of related classes: class Card { public: Card(); Card (string n) ; virtual bool is_expired() const; virtual void print () const; private: string name; Card:: Card() name = ""; Card: :Card (string n) { name = n; Card::is_expired() return false; } Write definitions for each of the following derived classes. Derived Class Data IDcard ID number CallingCard Card number, PIN Driverlicense Expiration date For each derived class, supply private data members and the declarations (but not the definitions, yet) of the constructors and the print function. Hint: Here is the answer for ID Card: cla33 IDcard : public Card public: IDcard(); IDcard (string n, string id); virtual void print () const; private: string IDnumber; };

Answer 1

//Source code #include<iostream> using namespace std; class Card {    public:        Card();        Card(string n);        virtual bool is_expired() const;        virtual void print() const;    private:        string name; }; Card::Card() {    name = ""; } Card::Card(string n) {    name =n; } Card::is_expired() true {    return false; } class IDcard :public Card {    public:        IDcard();        IDcard(string n,string id);        virtual void print() const;    private:        string IDnumber; }; IDcard::IDcard():Card() {    IDnumber = ""; } IDcard::IDcard(string n,string id):Card(n) {    IDnumber = id; } void Card::print() const {    cout<<"Name: "<< name<<endl; } void IDcard::print() const {    Card::print();    cout<<"ID number: "<<IDnumber<<endl; } int main() {    Card c("John"); // Creating object 'c' for Card class    IDcard d("Ana","12345"); // Creating object 'd' for IDCard class    c.print(); // calling print function for Card class object 'c'    d.print(); // calling print function for IDCard class object 'd'    return 0; }

Screen shot of the program 1 2 6 7 inheritence.cpp #include<iostreant using namespace std; 3 class Card 49 { 5 public: Card(); Card(string n); 8 virtual bool is_expired() const; 9 virtual void print() const; 10 private: 11 string name; 12 }; 13 Card: :Card() 14 { 15 name = 16 } 17 Card:: Card(string n) 18 19 name = n3 } 21 Card::is_expired) true 22 { return false; 24 } 25 class IDcard public Card 26 { 27 public: 28 IDcard(); 29 IDcard(string n, string id); 30 virtual void print() const; 31 private: 32 string IDnumber; 33 }; 34 IDcard :: IDcard():Card() 35 { 36 IDnumber = ""; 0 { 20 23 27 3 | } } inheritence.cpp 23 return false; 24 25 class IDcard : public Card 26 { 27 public: 28 IDcard(); 29 IDcard(string n, string id); 30 virtual void print() const; 31 private: 32 string IDnumber; 33 }; 34 IDcard: : IDcard(): Card) 35 { 36 IDnumber = ""; 37 38 IDcard:: IDcard(string n, string id):Card(n) 39 { 40 IDnumber = id; 41 42 void Card::print() const 43 44 cout<<"Name: "<< name<<endl; 45 46 void IDcard: :print() const 47 { 48 Card::print(); 49 cout<<"ID number: "<<IDnumber<<endl; 50 } 51 int main() 52 { 53 Card c("John"); // Creating object 'c' for Card class 54 IDcard d("Ana", "12345"); // Creating object 'd' for ID Card class 55 c.print(); // calling print function for Card class object 'c' 56 d.print(); // calling print function for ID Card class object 'd' 57 return; 58 } } - }

Screen shot of the output O X D:\visaual C+ + \inheritence.exe Name : John Name : Ana ID number: 12345 Process exited after 9.006497 seconds with return value o Press any key to continue

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