利用C#开发的一个简单的电话管理小程序，主要在于哈希表（Hashtable）的嵌套使用，这方面的初学者可以参考一下-C# development using a simple telephone management of small procedures, mainly due to hash table (Hashtable) nested use this area for reference for beginners

电话薄：可写入，增加，修改。操作过程实现在一个。txt文档中-tel number book: has the write in, insert number, and change number function

纯正的C++编成实现,类的封装和调用,单用户进入系统,临时分配空间,this的使用,堪称完美.-Pure c++ into realization, the encapsulation of and calls, single user access to a system, temporary allocation space, this use, can perfect.

电话薄：可写入，增加，修改。操作过程实现在一个。txt文档中-tel number book: has the write in, insert number, and change number function