这是如何运作的？指向指针赋值的指针

#include <iostream>
using namespace std;
int main() {
    int *p1;
    p1 = new int;
    int *p2;
    p2 = new int;
    p2 = p1;    // what happens here?
    *p1=5;
    cout << "pointer 2 is " << *p2 << endl << *p1 << endl;  // both give out 5
    delete p1;  // what happens to p2 ?
    cout << "pointer 2 is " << *p2 << endl;
    delete p2;
    return 0;
}

当我删除指针对象 p1 时会发生什么？什么是指针 p2 现在引用？有人能解释一下吗？谢谢您的帮助

回答