第十章 关联容器

// test.cpp : 定义控制台应用程序的入口点。

//


#include "stdafx.h"
#include<iostream>
#include<fstream>
#include<vector>
#include<bitset>
#include<string>
#include<math.h>
#include<map>
#include<set>
#define MAX 30
using namespace std;
int main(int argc, _TCHAR* argv[])
{
    pair<string,int> p1;//不提供初始化，采用值初始化

    pair<string,int> p2("hit",10086);//提供初始化式

    p1 = make_pair("hit",10086);//pair也是一种模板类，必须提供两个类型

    cout<<p1.first<<endl;//成员是public类型的，可以直接访问

    cout<<p1.second<<endl;
    p1.first = "hit";
    cout<<unitbuf<<p1.first<<nounitbuf;
    cout<<endl<<p1.second<<endl;

    map<string,int> tel;
    tel["hit"] = 10086;//下标操作的时候，返回的是类型为mapped_type的左值，有就改变，没有就加进去

    map<string,int>::iterator ite = tel.begin();//对迭代器解引用，返回的是类型为value_type的引用

    map<string,int>::iterator end = tel.end();
    while(ite!=end){
        cout<<ite->first<<endl;
        cout<<ite->second<<endl;
        ++ite;
    }
    string word;
    map<string,int> wordCount;
    while(cin>>word){
        if(cin.bad()){
            throw runtime_error("error");
            break;
        }
        if(cin.fail()){
            cout<<"Error string"<<endl;
            cin.clear(cin.failbit);
            continue;
        }
        ++wordCount[word];
    }
    pair<map<string,int>::iterator,bool> result =wordCount.insert(make_pair("tang",10086));
    if(result.second){
        cout<<"OK"<<endl;
        cout<<result.first->first<<" "<<result.first->second<<endl;
    }
    wordCount.insert(tel.begin(),tel.end());
    ite = wordCount.begin();
    end = wordCount.end();
    while(ite!=end){
        cout<<ite->first<<endl;
        cout<<ite->second<<endl;
        ++ite;
    }
    map<string,int>::size_type num = wordCount.erase("hit");
    cout<<num<<endl;
    map<string,int>::iterator p = wordCount.begin();
    wordCount.erase(p);

}