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class Base{
protected:
int B;
}
class Derived: public Base{
protected:
int D;
}
void main()
{
Base *pB = new Derived;
delete pB;
}
Base *pB = new Derived;
/*
中间有N多的 pB-> 操作
*/
delete pB;
Base *pB = new Derived;
/*
中间会有很多的代码
*/
delete pB;