文件名称:111
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1、 形状(一)
编写C++程序完成以下功能:
(1) 声明一个基类Shape(形状),其中包含一个方法来计算面积;
(2) 从Shape派生两个类:矩形类和圆形类;
(3) 从矩形类派生正方形类;
(4) 分别实现派生类构造函数、析构函数和其他方法;
(5) 创建派生类的对象,观察构造函数、析构函数调用次序;(提示及要求:1,可通过在构造与析构函数中加入输出提示信息的方式观察相关调用;可以使用system( pause )进行程序的暂停;2,能够理解并说明每一次构造与析构函数调用是哪个对象的调用,并观察和解释相关调用顺序及其原因)
(6) 对不同对象计算面积
-1, the shape (a) write C++ program performs the following functions: (1) declare a base class Shape (shape), which contains a method to calculate the area (2) Shape derived two classes: Class rectangles and circles class (3) a class derived a rectangular square class (4) respectively, to achieve a derived class constructors, destructors and other methods (5) create a derived class object, observe the constructor, destructor calls the order (tips and requirements : 1, can be observed by the addition of related calls output message in the constructor and destructor function you can use the system (" pause" ) to pause the program 2, able to understand and explain every constructor and destructor function call is call which object and observe and explain its reasons for the order-related calls) (6) to calculate the area of different objects
编写C++程序完成以下功能:
(1) 声明一个基类Shape(形状),其中包含一个方法来计算面积;
(2) 从Shape派生两个类:矩形类和圆形类;
(3) 从矩形类派生正方形类;
(4) 分别实现派生类构造函数、析构函数和其他方法;
(5) 创建派生类的对象,观察构造函数、析构函数调用次序;(提示及要求:1,可通过在构造与析构函数中加入输出提示信息的方式观察相关调用;可以使用system( pause )进行程序的暂停;2,能够理解并说明每一次构造与析构函数调用是哪个对象的调用,并观察和解释相关调用顺序及其原因)
(6) 对不同对象计算面积
-1, the shape (a) write C++ program performs the following functions: (1) declare a base class Shape (shape), which contains a method to calculate the area (2) Shape derived two classes: Class rectangles and circles class (3) a class derived a rectangular square class (4) respectively, to achieve a derived class constructors, destructors and other methods (5) create a derived class object, observe the constructor, destructor calls the order (tips and requirements : 1, can be observed by the addition of related calls output message in the constructor and destructor function you can use the system (" pause" ) to pause the program 2, able to understand and explain every constructor and destructor function call is call which object and observe and explain its reasons for the order-related calls) (6) to calculate the area of different objects
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