C/C++ 传地址究竟传的是什么

// Type your code here, or load an example.
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

void testPointer(int *add)
{
   
   
    cout<<"========1=========="<<endl;
    cout<<"the value the pointer points:"<<*add<<endl;
    cout<<"it's