15.map映射

#include <iostream>
#include <map>
#include <cstring>
using namespace std;

//map常规用法
void main1()
{
    //映射
    map<char *, int> mymap;
    mymap.insert(pair<char *, int>("司令6", 16));
    mymap.insert(pair<char *, int>("司令2", 11));
    mymap.insert(pair<char *, int>("司令3", 12));
    mymap.insert(pair<char *, int>("司令4", 13));
    //第一个字段不允许重复
    mymap.insert(pair<char *, int>("司令4", 1323));

    for (auto i : mymap)
    {
        cout << i.first << "  " << i.second << endl;
    }

    for (auto cb = mymap.cbegin(), ce = mymap.cend(); cb != ce; cb++)
    {
        cout << (*cb).first << "  " << (*cb).second << endl;
    }

    auto it = mymap.find("司令2");
    //删除一个
    //mymap.erase(it);
    //删除一段
    //mymap.erase(it, mymap.end());
    //链式存储
    //auto ifind = mymap.begin()++;
    //cout << mymap["司令2"] << endl;
    //清空
    mymap.clear();
    cout << it->first << "  " << it->second << endl;
    cin.get();
}

struct strless
{
    //仿函数
    bool operator()(const char *str1, const char *str2)
    {
        //字符串比较
        return (strcmp(str1, str2) < 0);
    }
};

void main()
{
    //根据strless进行排序插入
    map<char *, int, strless> mymap;
    mymap.insert(pair<char *, int>("司令6", 16));
    mymap.insert(pair<char *, int>("司令2", 11));
    mymap.insert(pair<char *, int>("司令3", 12));
    mymap.insert(pair<char *, int>("司令4", 13));
    
    

    for (auto i : mymap)
    {
        cout << i.first << "  " << i.second << endl;
    }

    
    cin.get();
}