c++初步指针学习

#include<iostream>
#include<string>
using namespace std;
int main() {
    double num = 1024.5;
    //声明一个指针，指向num的值
    double* ptr_num = &num;
    cout << "num值:" << num << endl;
    cout << "ptr_num的值：" << &num << endl;
    cout << "ptr_num指向内存的值为：" << ptr_num << endl;
    cout << "ptr_num的地址为：" << &ptr_num << endl;
    return 0;
}