C++ map简单运用

#include <iostream>
#include <string>
#include <map>

using namespace std;

typedef pair<float, string> TIntStrPair;

map <int, TIntStrPair> IIStrMap; //<int, <float,string>>

map <string, string> StrStrMap; // <string,string>

int main(int argc, char *argv[]) {

    map <int ,string> IntStrMap;
    
    IntStrMap.insert(pair<int,string>(1, "Tom"));
    IntStrMap.insert(pair<int,string>(2, "Jimes"));
    IntStrMap.insert(pair<int, string>(3, "Mary"));
    IntStrMap.insert(make_pair(4, "Adom")); //use make_pair();

    map<int,string>::iterator it;

    for (it = IntStrMap.begin(); it != IntStrMap.end(); it++) {
        cout << it->first << " " << it->second << endl;
    }


    cout << "-------------------------------" << endl;

    IIStrMap.insert(pair<int, TIntStrPair>(1, pair<float, string>(1.1, "Tom")));
    IIStrMap.insert(pair<int, TIntStrPair>(2, pair<float, string>(2.1, "Fantex")));

        IIStrMap.insert(make_pair(3, make_pair(3.2, "Jimes")));//use make_pair()

    map<int, TIntStrPair>::iterator It;

    for (It = IIStrMap.begin(); It != IIStrMap.end(); It++) {
        cout << It->first << " " << It->second.first << " " << It->second.second << endl;
    }


    cout << "----------------------------------" << endl;

    StrStrMap.insert(pair<string,string>("md5sum", "true"));
    StrStrMap.insert(pair<string,string>("sigcheck", "false"));
    StrStrMap.insert(pair<string, string>("ors_path", "/sdcard/ors"));

    StrStrMap.insert(make_pair("time_zone", "CTS"));// use make_pair();

    cout << "list the value " << endl;

    map<string, string>::iterator iter;

    for (iter = StrStrMap.begin(); iter != StrStrMap.end(); iter++) {
        cout << iter->first << " = " << iter->second << endl;
    }

    cout << "change the value " << endl;

    iter = StrStrMap.begin();

    iter = StrStrMap.find("md5sum");
    iter->second = "false";

    cout << "list the vale after change it " << endl;

    for (iter = StrStrMap.begin(); iter != StrStrMap.end(); iter++) {
        cout << iter->first << " = " << iter->second << endl;
    }


    cout << "----------------------------------------" << endl;

    cout << "erase the element " << endl;

    iter = StrStrMap.begin();

    iter = StrStrMap.find("md5sum");
    StrStrMap.erase(iter);

        for (iter = StrStrMap.begin(); iter != StrStrMap.end(); iter++) {
        cout << iter->first << " = " << iter->second << endl;
    }


    return 0;

}