实验七：C++编程入门 一、实验内容 1. 理解继承与组合。 2. 学会使用多态特性。 3. 使用文件。 4. 异常处理。 二、实验题目 1. 创建一个class Counted，包含一个int类型的成员变量id和一个static int类

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lab4/1.cpp
lab4/2.cpp
lab4/3.cpp
lab4/4.cpp
lab4/C++程序设计语言－实验04.doc
lab4

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