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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp11
{
public abstract class Shape
{
public abstract double CalculateArea();
}
}
public interface IDrawable
{
public void draw();
}
public class Rectangle:Shape,IDrawable
{
int len;
int br;
public Rectangle(int len, int br)
{
this.len=len;
this.br=br;
}
public override double CalculateArea()
{
return len*br;
}
public void draw()
{
Console.WriteLine("Drawing shape from rectangle class");
}
}
public class Circle : Shape,IDrawable
{
int radius;
public Circle(int r)
{
this.radius=r;
}
public override double CalculateArea()
{
return radius*radius*3.14;
}
public void draw()
{
Console.WriteLine("Drawing shape from circle class");
}
}
class Demo
{
static void Main(string[] args)
{
Rectangle rect = new Rectangle(12, 22);
rect.CalculateArea();
// rect.draw();
Circle c = new Circle(18);
c.CalculateArea();
// c.draw();
IDrawable i=new Circle(23);
i.draw();
IDrawable i1 = new Rectangle(10, 11);
i1.draw();
}
}
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