C++之map操作

#include <iostream>
#include "map_struct.h"
#include <map>

using namespace std;

typedef struct real_data{
    int reg_addr;
    string desc;
}HistRecord;

int main()
{
    cout << "Hello world!" << endl;

    map<int, HistRecord> m_upmcsbConf;
    HistRecord histRecordData;
    histRecordData.reg_addr = 1;
    histRecordData.desc="aaaaaaaaaa";
    m_upmcsbConf.insert(pair<int,HistRecord>(1,histRecordData));

histRecordData.reg_addr = 2;
    histRecordData.desc="bbbbbb";
    m_upmcsbConf.insert(pair<int,HistRecord>(2,histRecordData));

    map<int, HistRecord>::iterator it;

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

    return 0;

}

Map遍历操作以及插入操作。

要点：insert插入要用pair， 遍历的时候it->first的first后面没有first()