using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace ImaginaryNumber   //  本来写虚数的，一不小心写成完整的复数了
{class Complex   //  虚数类{private double Real;    //  实部private double Img;     //  虚部public double GetReal   // 获取实部{get { return Real; }set { Real = value; }}public double GetImg    // 获取虚部{get { return Img; }set { Img = value; }}public Complex() // 构造函数{Real = Img = 0;}public Complex(double real, double img) // 重载构造函数{Real = real;Img = img;}public void Print() // 输出虚数，符合书写习惯,且四舍五入保留小数点后4位数字{if (Real == 0 && Img == 0)      // 为零Console.WriteLine("0");else if (Real == 0)             // 只有虚部，纯虚数Console.WriteLine("{0}i", (double)Math.Round((double)Img, 4));else if (Img == 0)              // 只有实部，实数Console.WriteLine("{0}", (double)Math.Round((double)Real, 4));else if (Img < 0)               // 虚部为负Console.WriteLine("{0} - {1}i", (double)Math.Round((double)Real, 4), (double)Math.Round((double)-Img, 4));else                            // 标准的复数 Console.WriteLine("{0} + {1}i", (double)Math.Round((double)Real, 4), (double)Math.Round((double)Img, 4));}public static Complex operator +(Complex c1, Complex c2)   // 重载加号{return new Complex(c1.Real + c2.Real, c1.Img + c2.Img);}public static Complex operator -(Complex c)    // 重载取反符号{return new Complex(-c.Real, -c.Img);}public static Complex operator -(Complex c1, Complex c2)   // 重载减号{return new Complex(c1.Real - c2.Real, c1.Img - c2.Img);}public static Complex operator *(Complex c1, Complex c2)   // 重载乘号{return new Complex(c1.Real * c2.Real - c1.Img * c2.Img, c1.Real * c2.Img + c1.Img * c2.Real);}public static Complex operator /(Complex c1, Complex c2)   //  重载除号{return new Complex((c1.Real * c2.Real + c1.Img * c2.Img) * 1.0 / (c2.Real * c2.Real + c2.Img * c2.Img), (c1.Img * c2.Real - c1.Real * c2.Img) * 1.0 / (c2.Real * c2.Real + c2.Img * c2.Img));}}class Program{static void Main(string[] args){// 随意测试Complex c1 = new Complex();Complex c2 = new Complex(5, 5);Complex c3 = new Complex(0, -2.3);Complex c4 = new Complex(3, 0);c4 = -c4;Console.Write("c1 = "); c1.Print();Console.Write("c2 = "); c2.Print();Console.Write("c3 = "); c3.Print();Console.Write("c4 = "); c4.Print();c1 = c2 + c3;c2 = c3 / c4;c3 = c1 * c2;c4 = c2 - c3;Console.Write("c1 = "); c1.Print();Console.Write("c2 = "); c2.Print();Console.Write("c3 = "); c3.Print();Console.Write("c4 = "); c4.Print();Console.ReadLine();}}
}