b***y
发帖数: 2799 | 1 class base
{
public:
f(void) { delete this; }
};
class derived : public base
{
};
int main()
{
derived D = new derived();
D->f();
}
which object is deleted? | d******n
发帖数: 42 | 2 I thought "this" is a constant pointer. so, can this be deleted? maybe you
will get a compiler error. | s***e
发帖数: 122 | 3 first, in your main function, you should make the derived object with new
operator, such as:
derived * pD = new derived();
pD->f();
and then, the base part of the object is deleted. And that's why you should
put a virtual destructor in base, in that case the whole object is deleted.
【在 b***y 的大作中提到】
: class base
: {
: public:
: f(void) { delete this; }
: };
: class derived : public base
: {
: };
: int main()
: {
|
|
