一、实验名称：Complex类的运算符重载

二、实验目的：这个实验题目的主要目的是让同学们掌握c++运算符重载的用法

三、实验内容：

编写一个Complex类，需要完成的运算符重载有：

(1) + ：重载+，用来完成两个复数的加法；

(2) -：重载-，用来完成两个复数的减法；

(3) *：重载*，用来完成两个复数的乘法；

(4) <<：重载<<，用来输出一个复数，输出的格式为(a + b * i)，其中a为实部，b为虚部。-First, the experiment name: Complex class operator overloading Second, the purpose of the experiment: The main objective of the experimental subject is to enable students to grasp c++ operator overloading usage of three experimental content: write a Complex class, complete operator overloading are: (1 ) PPLS: PPLS overloaded, used to complete the addition of two complex numbers　(2)-: overloaded- for performing subtraction of two complex numbers　(3)*:* overloaded for performing two complex multiplication　(4) < < : < <　overloaded, the output format is used (a+ b* i), where a is the real part, b is the imaginary part of a complex number output.