复数的加减运算

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication27
{
    class Program
    {
        class complex
        {
            public static  double  add(double x1,double  x2)
            {
                return x1+x2;
            }
            public static double SubStrac(double x1, double x2)
            {
                return x1-x2;
            }
        }
        static void Main(string[] args)
        {
            double a = 1, b = 2,
                   A = 3, B = 4;

            Console.WriteLine(“请输入第一个复数的实部a=”);
            a = Convert .ToDouble(Console .ReadLine ());

            Console.WriteLine(“请输入第一个复数的实部b=”);
            b = Convert.ToDouble(Console.ReadLine());

            Console.WriteLine(“请输入第二个复数的虚部A=”);
            A = Convert.ToDouble(Console.ReadLine());

            Console.WriteLine(“请输入第二个复数的虚部B=”);
            B= Convert.ToDouble(Console.ReadLine());

            Console.WriteLine(“{0}+{1}i and {2}+{3}i”, a, b, A, B);
            Console.WriteLine(“add:{0}+{1}i”,complex .add(a ,A ),complex .add(b ,B ));
            Console.WriteLine(“SubStract:{0}+{1}i”, complex.SubStrac(a, A), complex.SubStrac(b, B));
            Console.ReadKey();
        }
   
      }

   }

总结：通过这次作业，我知道了更多关于类和函数的运用，还有很多的小瑕疵。