MergeRecord_C++中map的使用

//============================================================================
// Name        : TTTest.cpp
// Author      : 
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C++, Ansi-style
//============================================================================

#include <iostream>
#include <stdlib.h>
#include <map>
typedef struct TIME_STRU {
    int nIndex; /* 表索引 */
    int nValue; /* 值 */
} TABLE_RECORD;

void MergeRecord(TABLE_RECORD* pOriRecord, int nOriRecordNum,
        TABLE_RECORD* pMergeRst, int* pnMergeRecordNum);

using std::cout;
using std::endl;
using std::map;
using std::make_pair;

void MergeRecord(TABLE_RECORD* pOriRecord, int nOriRecordNum,
        TABLE_RECORD* pMergeRst, int* pnMergeRecordNum) {
    map<int, int> inMap;

    for (int i = 0; i < nOriRecordNum; ++i) {
        auto ret = inMap.insert(make_pair(pOriRecord[i].nIndex, pOriRecord[i].nValue));
        if(!ret.second) {
　　　　　　　// 或者直接+=即可
            inMap[pOriRecord[i].nIndex] += pOriRecord[i].nValue);
        }
    }
    cout << inMap.size() << endl;
    cout << inMap[2] << endl;


    return;
}

int main() {
//    TABLE_RECORD pOriRecord[] = { { 1, 3 }, { 2, 3 }, { 2, 8 } };
//    cout << pOriRecord[0].nIndex << endl;
//
//    int nOriRecordNum = sizeof(pOriRecord) / sizeof(pOriRecord[0]);
//    cout << nOriRecordNum << endl;
//
//    TABLE_RECORD* pMergeRst;
//    int nMergeRecordNum = 0;
//    int* pnMergeRecordNum = &nMergeRecordNum;
//    MergeRecord(pOriRecord, nOriRecordNum, pMergeRst, pnMergeRecordNum);
    int ttt = -123;
    char s[8] = { 0 };
    itoa(ttt, s, 10);

    cout << s <<endl;
    return 0;
}