C++面向对象方法的编程，包括磁盘文件数据的输入输出，复数运算，求圆的表面积，图书管理程序，学生数据的赋值和输出，钟表类及闹钟类，时间的输入和输出，正整数集合的运算，泳池造价，people类。-C++ object-oriented programming methods, including disk file data input and output, complex computation, the surface area of ​　​　circular, library management program, student assignment and output data, and alarm clocks class type, time input and output, the set of positive integers operations, swimming pool cost, people category.