/*创建一个Circle类，包含数据成员Radius（半径）和设置半径的函数set，获取半径的函数get及计算周长和面积的函数。

然后定义主函数main，创建具有5个元素Circle的对象数组，将它们的半径设为1-5，然后计算每个圆的周长和面积。*/-/* Create a Circle class that contains the data members Radius (radius) and set the radius of the function set, get access to a function of radius and calculate the perimeter and area of ​ ​ the function. Then define the main function main, has five elements Circle create an array of objects, they are set to the radius of 1-5, and then calculate the perimeter and area of ​ ​ each circle.* /