Quiz 27

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description:

deleting NULL pointers have no effect. deleting a pointer to a base class which points to a derived object is legal assuming the base destructor is virtual. deleting an array of objects using a base class pointer is undefined.

struct Foo
{
virtual ~Foo() {}
};
struct Bar : public Foo
{
};
int main(int argc, char** argv)
{
Foo* f = new Bar;
delete f;
f = 0;
delete f;
Foo* fa = new Bar[10];
delete [] fa;
fa = 0;
delete fa;
return 0;
}
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