c++ 用 list 或者 map 对 csv文件进行删减

Question

把csv文件中 空格 和出错信息“#N/A”整行信息删除
最终只保留 StuNum（学号）、class（班级）、Dorm（宿舍）三列（删除其他三列）
部分内容如下：

结果如图

 struct TcsvMake
{
    int id;
    string Name;
    int StuNum;
    int class;
    int Dorm;
    int Age;
};
typedef list<TcsvMake> LISTcsvMake;

请大神指点

Answer 1

 // CFileRead.h
#include <iostream>
#include <fstream>
#include <sstream>
#include <algorithm>
#include <cstring>
#include <list>
using namespace std;

struct TcsvMake
{
    int id;
    string Name;
    int StuNum;
    int class;
    int Dorm;
    int Age;
};
typedef list<TcsvMake> LISTcsvMake;

class CFileRead
{

public:
    void readCSV(ifstream &input);
    LISTcsvMake m_csvMakeList;

};

 //CFileRead.cpp
#include<iostream>
#include <list>
#include"CFileRead.h" 

#include "string.h"
#pragma warning(disable:4996)
using namespace std;

void CFileRead::readCSV(ifstream &input)
{

    string csvLine;// 从输入流中读取每一行
    getline(input, csvLine);
    while (getline(input, csvLine))
    {
        TcsvMake tcsv;
        char *csv = (char*)csvLine.data();

        if (NULL != csv)
        {
            string id = strtok(csv, ",");
            istringstream csvStream(id);
            csvStream >> tcsv.id;

            string name = strtok(NULL, ",");
            istringstream CsvStream(name);
            CsvStream >> tcsv.Name;

            string stuNum = strtok(NULL, ",");
            istringstream cSvStream(stuNum);
            cSvStream >> tcsv.StuNum;

            string class = strtok(NULL, ",");
            istringstream csVStream(class);
            csVStream >> tcsv.class;

            string dorm = strtok(NULL, ",");
            istringstream CSvStream(dorm);
            CSvStream >> tcsv.Dorm;

            string age = strtok(NULL, ",");
            istringstream CSVStream(age);
            CSVStream >> tcsv.Age;

            m_csvMakeList.push_back(tcsv);
        }
    }   
}