{
printf("I am Base()\n");
}
virtual ~Base()
{
printf("I am ~Base()\n");
}
public:
virtual void SayHello()
{
printf("Hello Base\n");
}
void SayWorld()
{
printf("World Base\n");
}
};
class Derived : public Base
{
public:
Derived()
{
printf("I am Derived()\n");
}
virtual ~Derived()
{
printf("I am ~Derived()\n");
}
public:
void SayHello();
void SayWorld();
};
void Derived::SayHello()
{
printf("Hello Derived\n");
}
void Derived::SayWorld()
{
printf("World Derived\n");
}
int main(void)
{
Base *b1 = new Base;
Base *b2 = new Derived;
Derived *d = new Derived;
b1->SayHello();
b1->SayWorld();
b2->SayHello();
b2->SayWorld();
d->SayHello();
d->SayWorld();
delete d;
delete b2;
delete b1;
d= NULL;
b2 = NULL;
b1 = NULL;
return 0;
}
class Base
{
public:
Base()
{
printf("I am Base()\n");
}
virtual ~Base()
{
printf("I am ~Base()\n");
}
public:
virtual void SayHello()
{
printf("Hello Base\n");
}
void SayWorld()
{
printf("World Base\n");
}
};
class Derived : public Base
{
public:
Derived()
{
printf("I am Derived()\n");
}
virtual ~Derived()
{
printf("I am ~Derived()\n");
}
public:
void SayHello();
void SayWorld();
};
void Derived::SayHello()
{
printf("Hello Derived\n");
}
void Derived::SayWorld()
{
printf("World Derived\n");
}
int main(void)
{
Base *b1 = new Base;
Base *b2 = new Derived;
Derived *d = new Derived;
b1->SayHello();
b1->SayWorld();
b2->SayHello();
b2->SayWorld();
d->SayHello();
d->SayWorld();
delete d;
delete b2;
delete b1;
d= NULL;
b2 = NULL;
b1 = NULL;
return 0;
}输出结果：
I am Base()
I am Base()
I am Derived()
I am Base()
I am Derived()
Hello Base
World Base
Hello Derived
World Base
Hello Derived
World Derived
I am ~Derived()
I am ~Base()
上一页 [1] [2] [3] [4] [5] [6] 下一页