在程序一的基础上进行了一些修改，重载了<<和>>，实现Employee和Payment等类型对象的输出和输入.写了一个函数find（int，char*）用于ID和Password的匹配和相应的操作。-Output and input. Were some changes in the program based on overloading the < <　and > >　Employee and Payment type object used to write a function find (int, char*) ID and Password match and the corresponding operation.