Question

我想从名为organisation.txt的文本文件中显示员工编号（不在课堂上声明），姓名，职业和员工部门，并将其保存在课程中声明的变量{ {1}}。

如何提取文本文件中的数据并将其保存到相应的变量中？

OrganisationRecord

organisation.txt

#include <iostream>
#include <string>
#include <vector>
#include <fstream>

#define ORGANISATIONALRECORDSFILE "organisation.txt"
#define HRRECORDSFILE "HR_records.txt"
#define PAYROLLRECORDSFILE "payroll_records.txt"

using namespace std;


class OrganisationRecord
{
private:
public:
    string name;
    string occupation;
    string department;
};

class HRRecord
{
private:
public:
    string address;
    string phonenumber;
    string ninumber;
};

class PayrollRecord
{
private:
public:
    string ninumber;
    double salary;
};

class PayrollProcessing
{
private:
    ifstream inputfile;
    ofstream outputfile;
    vector<OrganisationRecord> OrganisationRecords;
    vector<HRRecord> HRRecords;
    vector<PayrollRecord> PayrollRecords;
public:
    void loadOrganisationRecords(string filename);
    void loadHRRecords(string filename);
    void loadPayrollRecords(string filename);
    void displayEmployeeOfSalaryGTE(double salary);
    //GTE = greater than or equal to
};

void PayrollProcessing::loadOrganisationRecords(string filename)
{
    inputfile.open(ORGANISATIONALRECORDSFILE);

    if (!inputfile)
    {
        cout << "the organisation records file does not exist" << endl;
        return;
    }

        OrganisationRecord _organisationrecord;
        int employeenumber;


        while (inputfile >> employeenumber)
        {   
            while (inputfile >> _organisationrecord.name)
            {
                cout << _organisationrecord.name;
                cout << _organisationrecord.occupation;
                cout << _organisationrecord.department <<endl;
            }

            OrganisationRecords.push_back(_organisationrecord);
        }

}



int main(void)
{
    PayrollProcessing database1;
    database1.loadOrganisationRecords(ORGANISATIONALRECORDSFILE);

    return 0;
}

Answer 1

这是一种无需对输入进行任何错误检查即可使用的方法。就像其他人所说的那样，你需要使用std::getline()逐行读取文件，因为直接输入你的变量会导致输入解析被文本中的空格分隔，而不是整行。 / p>

OrganisationRecord _organisationrecord;
std::string employeeNumberStr;
int employeenumber;

// without any robust error checking...
while (std::getline(inputfile, employeeNumberStr))
{
    // store employee number string as an integer
    std::stringstream ss;
    ss << employeeNumberStr;
    ss >> employeenumber;

    std::getline(inputfile, _organisationrecord.name);
    std::getline(inputfile, _organisationrecord.occupation);
    std::getline(inputfile, _organisationrecord.department);

    // debug print results
    std::cout << "id number: " << employeenumber << std::endl;
    std::cout << "name: " << _organisationrecord.name << std::endl;
    std::cout << "occupation: " << _organisationrecord.occupation << std::endl;
    std::cout << "department: " << _organisationrecord.department << std::endl;

    OrganisationRecords.push_back(_organisationrecord);
}

从文件中读取数据并将其存储在变量中

1 个答案: