指標

#include<iostream>
using namespace std;

int main()
{
    int name=5;
    int *ptr_name=&name;
    cout<<"address of name:"<<&name<<endl;
    cout<<"&ptr_name:\t"<<&ptr_name<<endl;
    cout<<"pr_name:\t"<<ptr_name<<endl;
    cout<<"*ptr_name:\t"<<*ptr_name<<endl;

    int other=10;
    ptr_name=&other;
    cout<<"\n\n***point to other\n";
    cout<<"address of name:"<<&name<<endl;
    cout<<"address of other:"<<&other<<endl;
    cout<<"&ptr_name:\t"<<&ptr_name<<endl;
    cout<<"pr_name:\t"<<ptr_name<<endl;
    cout<<"*ptr_name:\t"<<*ptr_name<<endl;

    other=5;
    cout<<"\n\n***other=5\n";
    cout<<"value of other:\t"<<other<<endl;
    cout<<"*ptr_name:\t"<<*ptr_name<<endl;

    *ptr_name=100;
    cout<<"\n\n*** *ptr_name=100\n";
    cout<<"value of other:\t"<<other<<endl;
    cout<<"*ptr_name:\t"<<*ptr_name<<endl;
}