电话本

 　　实现简单电话本功能，用姓名来搜索电话号码

 　　用户输入姓名，程序查找并输出结果

 　　用户可以通过输入添加姓名和电话号码

 　　用户可以删除姓名和电话号码

 　　电话本可以保存在指定文件中

 　　电话被从指定文件中读入到内存

-　perform simple phone book phone book function, using the name to search for phone numbers 　user input the name, the program to find and output 　Users can add by entering the name and phone number 　Users can delete the name and phone number 　phone book can be saved in the specified document 　phones were read from the specified file into the memory