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#include <iostream>
using namespace std;
class A
{
public:
void f() {cout << "A::f()" << endl;}
};
int main()
{
A *pa = new A;
pa->f();
pa = NULL;
pa->f(); //还可以调用??
return 0;
}
class A
{
public:
int a;
public:
void f() {cout << "A::f() " << a << endl;}
};
int main()
{
A *pa = new A;
pa->a = 10;
pa->f();
pa = NULL;
pa->f(); //还可以调用??
return 0;
}