定义一个复数类，可以通过构造函数给复数对象赋值，实部和虚部是该类的私有属性，必须有获取和修改属性的方法，并定义它与复数、实数相加和相减及复数间乘的方法-JAVA

定义一个复数类用于复数的加减乘除计算，并进行操作符的重载，可循环使用-The definition of a complex class for complex addition and subtraction, multiplication and division calculation, and operator overloading, reusable

掌握类的概念及构造方法 掌握构造函数的定义与使用 掌握友元的定义与使用；掌握运算符的重载定义与使用。-Grasp the concept of a class and tectonic methods Master the constructor of the definition and use Master of the definition and use a friend yuan Master operator overloaded definition and use.

进行复数的计算，包含的加，减，乘，除，这个程序是本来自己研究开发出来的，仅供大家参考-Complex calculation, contains the plus, minus, multiply, In addition, the program would have their own research developed only for reference