C# Inheritance Aptitude Questions and Answers | Set 3

1. Inheritance is used to reuse existing facilities of the parent class.
2. We can override the existing functionalities of the superclass.
3. We can also implement new functionality in the child class.
4. We can implement polymorphic behavior using inheritance.

Options:

1. Only A
2. Only B
3. Only C
4. A, B and C

1. class A 
   { ... }
   class B : public A
   { ... }
   

2. class A 
   { ... }  
   class B :  A
   { ... }
   

3. class A 
   { ... }  
   class B : protected A
   { ... }
   

4. class A
   {
   	...
   	class B
   	{ ... }
   }
   

Options:

1. A
2. B
3. C
4. D

using System;

class Person
{
    private string name;
    private string address;

    public void setPerson(string n, string add)
    {
        name    = n     ;
        address = add   ;
    }

    public void printPersonDetail()
    {
        Console.WriteLine("Name: {0}, Address: {1}", name, address);
    }
}

class Employee : Person
{
    private int id      ;
    private int salary  ;

    public void setEmployee(int ID, int sal)
    {
        id      = ID    ;
        salary  = sal   ;
    }

    public void printEmployeeDetail()
    {
        Console.WriteLine("Id: {0}, Salary: {1}", id, salary);
    }
}

class program
{
    static void Main(string[] args)
    {
        Employee E = new Employee();

        E.setPerson("Arvind", "New Delhi");
        E.setEmployee(101, 60000);

        E.printPersonDetail();
        E.printEmployeeDetail();
    }
}

1. Name: Arvind, Address: New Delhi
   Id: 101, Salary: 60000
2. Name: Arvind, Address: New Delhi
3. Syntax Error
4. Runtime Error

1. Single Inheritance
2. Multiple Inheritance
3. Top-level inheritance
4. Hybrid inheritance

1. Yes
2. No