建立一个通讯录，存放有姓名、电话号码、住址等，具备输入、查找、添加、修改及删除等功能。
A book, kept the name, phone number, address, etc., with the input, find, add, modify and delete functions.
建立一个通讯录，存放有姓名、电话号码、住址等，具备输入、查找、添加、修改及删除等功能。
A book, kept the name, phone number, address, etc., with the input, find, add, modify and delete functions.
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