using System;namespace RectangleApplication {class Rectangle {//member variablesprotected double length;
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using System;
namespace RectangleApplication {
class Rectangle {
//member variables
protected double length;
protected double wIDth;
public Rectangle(double l, double w) {
length = l;
wIDth = w;
}
public double GetArea() {
return length * wIDth;
}
public voID display() {
Console.Writeline("Length: {0}", length);
Console.Writeline("WIDth: {0}", wIDth);
Console.Writeline("Area: {0}", GetArea());
}
}//end class Rectangle
class tabletop : Rectangle {
private double cost;
public tabletop(double l, double w) : base(l, w) { }
public double GetCost() {
double cost;
cost = GetArea() * 70;
return cost;
}
public voID display() {
base.display();
Console.Writeline("Cost: {0}", GetCost());
}
}
class ExecuteRectangle {
static voID Main(string[] args) {
tabletop t = new tabletop(4.5, 7.5);
t.display();
Console.Readline();
}
}
}
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本文标题为:C#初始化基类
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