C++求大神指教
运行出错：‘
[解决办法]
VC6.0没看见有啥子问题，大概人品太好了
[解决办法]
在virtual里面，如果你要把它定义为纯虚函数的话，在后面 =0 否则在后面加{}
[解决办法]
ISpeak是一个未完成的类啊，而且尽量把构造函数析构函数的写上，反正我喜欢写上~
[解决办法]
class ISpeak
{
public:
virtual void speak(){}
};
//#include <iostream>
//using namespace std;
//
//class Base{
//public:
//void run() { display(); }
//virtual void display() { cout<< "Base" <<endl; }
//};
//
//class Drive: public Base{
//public:
//void display() { cout<< "Drive" <<endl; }
//};
//
//int main(void)
//{
//Base *p = new Drive;
//p->run();
//delete p;
//system("PAUSE");
//return 0;
//}
#include <iostream>
using std::endl;
using std::cout;
class ISpeak
{
public:
virtual void speak() = 0;// 纯虚函数不用实现
virtual ~ISpeak() {};// 析构函数为虚函数
};
class Bark
:public ISpeak
{
public:
void speak() { cout<< " dog bark.." << endl; }
};
class Dog
:public Bark
{
public:
Dog():age(0) {}
private:
int age;
};
int main()
{
Dog d;
ISpeak* s = &d;
s->speak();
cout<< "Hello world!" <<endl;
return 0;
}
