(28.218.81608.81609.81613.82501.82503.82438)

//作业1 1. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Application1 { class Program { static void Main(string[] args) { Console.WriteLine("按Q键退出，按其它键继续"); while (Console.ReadKey().KeyChar != 'Q') { Console.Write("请输入本金："); double corpus=double.Parse(Console.ReadLine()); Console.Write("请输入利率："); double rate=double.Parse(Console.ReadLine()); Console.Write("请输入存款年数："); int years=int.Parse(Console.ReadLine()); int i = 0; while (i < years) { corpus = corpus * (1 + rate); i++; } Console.Write("本息合计为："); Console.Write(corpus); } } } } 2. public class Circle2D { public double X; public double Y; public double Radius; public Circle2D() { X=Y=0; Radius=1; } public Circle2D(double ax,double ay,double R) { X=ax;Y=ay; Radius=R; } public void Area() { Console.Write("圆面积为："); Console.Write(3.14*Radius*Radius); } public void Perimeter() { Console.Write("圆周长为："); Console.Write(3.14*Radius*2); } public bool Contains(double x ,double y) { if((X-x)*(X-x)+(Y-y)*(Y-y)<Radius*Radius) return true; else return false; } public bool Contains(Circle2D circle) { if(circle.Radius<Radius) { if((X-circle.X)*(X-circle.X)+(Y-circle.Y)*(Y-circle.Y)<=(Radius-circle.Radius)*(Radius-circle.Radius)) return true; else return false; } else return false; } public bool Oerlaps(Circle2D circle) { if(circle.X==X&&circle.Y==Y&&circle.Radius==Radius) return true; else return false; } }

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