//只创造一个list类，所有信息属性 以字符串实现

//通讯录实现在文件的读取中，将所有录入信息作为字符串存储

//实用文件输入输出流进行录入

//所录入联系人信息保存在txt文件中，再通过 iomanip的使用调节输入输出界面的格式 -//Just to create a list class, string property to achieve all of the information// address book to achieve in the document read in all the entry information stored as a string// utility file input and output streams are input// by the contacts entry Information stored in the txt file, and then through the use of regulation iomanip input and output interface format