本文共 1311 字，大约阅读时间需要 4 分钟。
定义一个哺乳动物Mammal类，数据成员为itsAge，再由此派生出狗Dog类，数据成员为itsWeight，分别定义Mammal类和Dog类的构造和析构函数。另外Mammal类中需定义成员函数GetAge()，SetAge()，Speak()，其中Speak()函数能够显示“Mammal sound!”。Dog类中需定义成员函数GetWeight()，SetWeight()，WagTail()，其中WagTail()函数，显示"Tail wagging "。然后通过Debug调试观察基类与派生类的构造函数与析构函数的调用顺序。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | #include<iostream> using namespace std; class Mammal{ public : Mammal( int itsAge){ age=itsAge; cout<< "Mammal constructor..." <<endl; } ~Mammal(){ cout<< "Mammal destructor..." <<endl; } int SetAge( int itsAge){ age=itsAge; } int GetAge(){ return age; } int Speak(){ cout<< "Mammal sound!" <<endl; } private : int age; }; class Dog: public Mammal{ public : Dog( int itsAge, int itsWeight):Mammal(itsAge),weight(itsWeight){ cout<< "Dog constructor..." <<endl; } ~Dog(){ cout<< "Dog destructor..." <<endl; } int SetWeight( int itsWeight){ weight=itsWeight; } int GetWeight(){ return weight; } int WagTail(){ cout<< "Tail wagging..." <<endl; } private : int weight; }; int main(){ Dog jack_Dog(1,5); cout<< "jack is " <<jack_Dog.GetAge()<< " years old" <<endl; cout<< "jack's weight is " <<jack_Dog.GetWeight()<<endl; return 0; } |
本文转自 pangfc 51CTO博客，原文链接：http://blog.51cto.com/983836259/1338345，如需转载请自行联系原作者