自己按照算法写的C代码，请大家多多指点指点，看看有什么需要改进的-Themselves in accordance with the algorithm written in C code, a lot of pointers pointing us to see what needs improvement

孙鑫视频源码第二课C++经典语法与应用，类的编写与应用，构造与析构函数，函数的重载，类的继承，函数覆盖，基类与派生类的构造函数、析构函数先后调用顺序，如何在派生类构造函数中向基类的构造函数传递参数，this成员变量，类型转换的内幕，虚拟函数与多态性,引用和指针的变量的区别与共同处。-Sun Xin Lesson Video Source C++ syntax and application of the classic, class preparation and application, st