override.cs

深入浅出C＃,学习C#比较好的用例,能够很快掌握C#.

using System;

class Area
{
	public Area(double r,double h)
	{
		radius=r;
		height=h;
	}
	public virtual double F()
	{
		area1=Math.PI*radius*2;//底面积
		area=area1*height;
		return area;
	}
	public double radius,height,area1,area;
}

class Volumn:Area
{
	public Volumn(double radius,double height):base(radius,height)
	{
	}
	public override double F()//覆盖基类方法
	{
		return (base.F()*radius/2);
	}
}

class Mainclass
{
	public static void Main()
	{
		Console.WriteLine("计算圆柱体的表面积......");
		Console.WriteLine("请输入圆柱体底面的半径:");
		string s=Console.ReadLine();
		double radius=double.Parse(s);
		Console.WriteLine("请输入圆柱体的高：");
		string str=Console.ReadLine();
		double height=double.Parse(str);
		Area area=new Area(radius,height);
		Console.WriteLine("the area is:{0}",area.F());
		Console.WriteLine("计算圆柱体的体积......");
		Volumn volumn=new Volumn(radius,height);
		double v=volumn.F();
		Console.WriteLine("该圆柱体的体积是:{0}",v);
	}
}