Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Inheritance
{
class Program
{
static void Main(string[] args)
{
Principal g = new Principal();
g.Monitor();
Teacher d = new Teacher();
d.Monitor();
d.Teach();
Student s = new Student();
s.Monitor();
s.Learn();
Console.ReadKey();
}
class Principal
{
public void Monitor()
{
Console.WriteLine("Monitor");
}
}
class Teacher : Principal
{
public void Teach()
{
Console.WriteLine("Teach");
}
}
class Student : Principal
{
public void Learn()
{
Console.WriteLine("Learn");
}
}
}
}
Output:
Monitor
Monitor
Teach
Monitor
Learn
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