C#之运算符重载学习案例

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace Override_test
{
    public class ComplexClass
    {
        public class complex
        {
            private float real;
            private float img;
            public complex(float p, float q)     //构造函数
            {
                real = p;
                img = q;
            }
            public complex()     //构造函数
            {
                real = 0;
                img = 0;
            }
            public void Print()
            {
                Console.WriteLine("{0}+{1}i", real, img);
            }
            public static complex operator +(complex Lhs, complex rhs)
            {
                complex sum = new complex();
                sum.real = Lhs.real + rhs.real;
                sum.img = Lhs.img + rhs.img;
                return sum;
            }
            public static complex operator -(complex Lhs, complex rhs)
            {
                complex result = new complex();
                result.real = Lhs.real - rhs.real;
                result.img = Lhs.img - rhs.img;
                return result;
            }
        }
        static void Main()
        {
            complex A = new complex(10.5f, 12.5f);
            complex B = new complex(8.0f, 4.5f);
            complex C;
            Console.Write("Complex Number A:");
            A.Print();
            Console.Write("Complex Number B:");
            B.Print();
            C = A + B;
            Console.Write("
A+B=");
            C.Print();
            C = A - B;
            Console.Write("A-B=");
            C.Print();
        }
    } 
}