C++ STL容器之pair快速入门

#include<iostream>
#include<utility>
#include<string>
using namespace std;
int main(){
    pair<string, string> p;
    p.first = "和泉纱雾";
    p.secnond = "A";
    cout<< p.first << "" << p.second << endl;//输出和泉纱雾和A
    p = make_pair("奈奈子","B");
    cout<< p.first << "" << p.second << endl;//输出奈奈子和B
    p = pair<string, int>("椎名真白","B");
    cout<< p.first << "" << p.second << endl;//输出椎名真白和B

    pair<int, int> p1(5,10);
    pair<int, int> p2(5,15);
    pair<int, int> p3(10,5);
    if(p1<p3)printf("p1 < p3");
    if(p1<=p3)printf("p1 <= p3");
    if(p1<p2)printf("p1 < p2");
    return 0;
}

#include<iostream>
#include<map>
#include<string>
using namespace std;
int main(){
    map<string, int> mp;
    mp.insert(make_pair("奈奈子", 1));
    mp.insert(pair<string, int>("椎名真白",2));
    for(map<string, int>::iterator it = mp.begin(); it != mp.end(); it++){
        cout << it->first << "" << it -> second << endl;
    }//输出"奈奈子", 1和"椎名真白",2
    return 0;
}