C++中 pair 的使用方法

#include
#include
#include

// 方法2 pair pB; pB = make_pair("two", 2); // pair的输出 cout << "pA : " << pA.first << " "<< pA.second << endl; cout << "pB : " << pB.first << " "<< pB.second << endl; // 结合map的使用 map mA; mapmB; mA.insert(pA); mB.insert(pB); for (map::iterator it = mA.begin(); it != mA.end(); ++it) { cout << "First Member of mA: " << it->first << endl; cout << "Second Member of mA: " << it->second << endl; } for (map::iterator it = mB.begin(); it != mB.end(); ++it) { cout << "First Member of mB: " << it->first << endl; cout << "Second Member of mB: " << it->second << endl; } return 0; }

#include
#include
#include
#include
#include
#include
#include
#include

#include 
#include 
#include 
using namespace std;

int main()
{
    pair anon;    // 包括两个字符串
    pair word_count; // 包括字符串和整数
    pair > line; // 包括字符串和一个int容器

    pair author("James", "Joyce"); // 定义成员时初始化
    cout << author.first << " - " << author.second << endl;

    string firstBook;             // 使用 . 訪问和測试pair数据成员
    if (author.first == "James" && author.second == "Joyce") {
        firstBook = "Stephen Hero";
        cout << firstBook << endl;
    }

    typedef pair Author; // 简化声明一个作者pair类型
    Author proust("Marcel", "Proust");
    Author Joyce("James", "Joyce");

    pair next_auth;
    string first, last;
    while (cin >> first >> last) {
        // 使用make_pair函数生成一个新pair对象
        next_auth = make_pair(first, last);
        // 使用make_pair函数，等价于以下这句
        next_auth = pair (first, last);

        cout << next_auth.first << " - " << next_auth.second << endl;
        if (next_auth.first == next_auth.second)
            break; // 输入两个相等,退出循环
    }

    cout <<  "由于pair的数据成员是共同拥有的。因而能够直接读取输入" << endl;
    while (cin >> next_auth.first >> next_auth.second) {

        cout << next_auth.first << " - " << next_auth.second << endl;
        if (next_auth.first == next_auth.second)
            break;
    }

    return 0;
}

临时仅仅会这么简单的使用方法。刚学到的……