Question

What is Multiple Inheritance and explain it using a Class Diagram and Write a Code for it in C#. Use Set() and Get() as well.

Answer 1

//C# code

/**
* Multiple inheritance is a concept, When a child class inherits more than one
* class means it has more than one super class is known as multiple inheritance.
* Since as we know Multiple inheritance is not supported by c# due to conflict.
* So to acquire this phenomenon we use Interfaces.
* Interfaces is one which contains pure abstract methods.
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace multiple_inheritance
{
interface Car
{
void speed();
}
interface CarPolicy
{
bool policyStatus();
}
class Driver : Car, CarPolicy
{
private String vehicleType;
private bool isPolicyActive;
//getter and setters property
public String VehicleType
{
get
{
return vehicleType;
}
set
{
vehicleType = value;
}
}
public bool IsPolicyActive
{
get
{
return isPolicyActive;
}
set
{
isPolicyActive = value;
}
}
public void speed()
{
Console.WriteLine(vehicleType+" is running at average speed.");
}
public bool policyStatus()
{
return isPolicyActive;
}
  
}
class Program
{
static void Main(string[] args)
{
Driver d1 = new Driver();
d1.VehicleType = "Car";
d1.IsPolicyActive = true;
if(d1.policyStatus())
{
Console.WriteLine("Car policy is active. ");
}
else
{
Console.WriteLine("Car policy is not active.");
}
d1.speed();
//pause
Console.ReadLine();
}
}
}

//output

//Class diagram

//If you need any help regarding this solution... please leave a comment...... thanks