Quiz on Polymorphism in C++

Types of polymorphism in C++ are:

Types of compile time polymorphism in C++ are:

1. An abstract class in C++ can contain

1. What is the output of the following code snippet?

#include<iostream>

using namespace std;

class Student

{ 

    public : int marks; 

void display() 

{ 

cout<<“Base class”<<endl;

}

};

class Topper: public Student

{

public: 

void display()

{ 

cout<<“Derived class”; 

}

};

int main() {

Student s; 

Topper t;

s.display();

t.display();

return 0;

}

1. What is the output of the following code snippet?

#include <bits/stdc++.h>

using namespace std;

class Students

{

public:

void display(int x)

{

cout <<  x <<” “;

}

void display(double x)

{

cout << x << ” “;

}

void display(int x, int y)

{

cout << x << “, ” << y << endl;

}

};

int main() {

Students obj1;

obj1.display(7);

obj1.display(9.132);

return 0;

}

1. What is the output of the following code snippet?

#include <iostream>

using namespace std;

class Parent

{

  public:

  void display()

  {

    cout << “Parent”;

  }

};

class Child:public Parent

{

  public:

  void display()

  {

    cout << “Child”;

   }

};

int main()

{

  Parent* p;

  Child c;

  p = &c;

  p->display();

  return 0;

}

1. What is the output of the following code snippet?

#include <iostream>

using namespace std;

class Parent

{

  public:

  void display()

  {

    cout << “Parent”;

  }

};

class Child:public Parent

{

  public:

  void display()

  {

    cout << “Child”;

   }

~Child()

{

    cout<<“Child class Destructor called”;

}

};

int main()

{

 Parent* p = new Child;

 p->display();

  delete p;

  return 0;

}

1. What is the output of the following code snippet?

using namespace std;    

class Addition

{    

    public:    

    static int add(int a,int b){      

        return a + b;      

    }      

    static int add(int a, int b, int c)      

    {      

        return a + b + c;      

    }      

    static int add(int a, int b, int c, int d)

    {

        return a+b+c+d;

    }

};     

int main() {    

    Addition a;                                                  

    cout<<a.add(5, 10)<<” “;      

    cout<<a.add(6, 12, 18)<<” “;  

    cout<<a.add(2,3,4,5);

   return 0;    

}

1. What is the output of the following code snippet?

#include <iostream>    

using namespace std;    

class Multiplication

{    

    public:    

    static int mul(int a,int b){      

        return a * b;      

    }      

    static int mul(int a, int b, int c)      

    {      

        return a * b * c;      

    }      

};     

float mul(double x, int y)  

{  

    return x*y;  

}  

int main() {    

    Multiplication m;                                                  

    cout<<m.mul(5, 10)<<” “;      

    cout<<m.mul(2, 3, 4)<<” “;  

    cout<<mul(0.3,5);

   return 0;    

}

1. What is the output of the following program?

#include <iostream>    

using namespace std;    

class Multiplication

{    

    public:    

    static int mul(int a=2,int b=5){      

        return a * b;      

    }      

    static int mul(int a, int b, int c)      

    {      

        return a * b * c;      

    }      

};     

float mul(double x, int y)  

{  

    return x*y;  

}  

int main() {    

    Multiplication m;                                                  

    cout<<m.mul(5)<<” “;      

   return 0;    

}    

1. What is the output of the following code snippet?

#include <iostream>    

using namespace std;    

    void mul(int a){      

        cout<<a<<” “;      

    }      

    void mul(int &a)      

    {      

       cout<<a<<” “;    

    }      

int main() {    

       int number=5;                                         

       mul(number);

   return 0;    

}   

1. What is the output of the following code snippet?

#include <iostream>  

using namespace std;  

class Multiplication  

{  

    int x;  

      public:  

      Multiplication(){}  

    Multiplication(int i)  

    {  

       x=i;  

    }  

    void operator*(Multiplication);  

    void display();  

};  

void Multiplication :: operator*(Multiplication m)  

{  

    int mul = x*m.x;  

    cout<<mul;  

}  

int main()  

{  

    Multiplication m1(5);  

    Multiplication m2(4);  

    m1*m2;  

    return 0;  

}

What is the output of the following code snippet?

1. What is the output of the following code snippet?

#include <iostream>

using namespace std;

class Superclass

{

public:

virtual void display()=0;

};

class Subclass:public Superclass

{

    public:

void display()

{

cout<<“virtual function”<<endl;

}

};

int main()

{

Superclass *super;

Subclass sub;

super = &sub;

sub.display();

super->display();

return 0;

}

1. What is the output of the following code snippet?

#include <iostream>

using namespace std;

class Superclass

{

public:

virtual void display()

{

    cout<<“Superclass”<<endl;

}

};

class Subclass:public Superclass

{

    public:

void display()

{

cout<<“Subclass”<<endl;

}

};

int main()

{

Superclass a;

Subclass b;

Superclass c;

Superclass *pa[]={&a,&b,&c};

for ( int j=0;j<3;j++)

pa[j]->display();

return 0;

}