测试...外部指针访问private

 #include<iostream>

 using namespace std;

 class A{
 public:
     int* getPointer(){
         return &m;
     }
     void out(){
         cout<<"m = "<<m<<endl;
     }
 private:
     int m;    

 };

 int main(){
     int *p = nullptr;
     A a;

     p = a.getPointer();

     *p = ;

     a.out();
 }