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using System;
class HelloWorld {
static void Test01()
{
Circle circle1 = new Circle();
circle1.r = 10;
double d = circle1.GetArea();
double d1 = circle1.GetMoheet();
Console.WriteLine("Area: {0}",d);
Console.WriteLine("Masaha: {0}",d1);
}
static void Main() {
Console.WriteLine("Hello World");
Test01();
}
}
using System;
public class Circle
{
//صفات
public double r;
//عمليات
public double GetArea()
{
return Math.PI * Math.Pow(this.r, 2);
}
public double GetMoheet()
{
return 2 * Math.PI * this.r;
}
}
