38 lines
576 B
C++
38 lines
576 B
C++
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// 多态本质:
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// 父类引用或指针指向子类对象，通过父类指针或引用来（操作子类对象）调用子类中重写的成员函数
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#include <iostream>
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#include <cstring>
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#include <cstdlib>
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using namespace std;
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class Animal
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{
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public:
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virtual void speak()
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{
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cout << "动物在唱歌..." << endl;
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}
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};
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class Dog : public Animal
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{
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public:
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void speak()
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{
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cout << "狗在唱歌..." << endl;
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}
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};
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void DoBusiness(Animal &animal)
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{
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animal.speak();
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}
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int main()
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{
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Dog dog;
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DoBusiness(dog);
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return 0;
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}
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