从结构数组排序和计算工资[关闭]

Question

我必须计算每个雇员的工资。 我将如何编写函数来做到这一点？ 我将如何根据员工的工资对他们进行分类？ 数据文件如下所示：我想我必须将int转换为字符串或其他方式。 我知道计算工资的功能是错误的。 谢谢。

A.Smith                       20001 25 40
T.Philip                      20002 20 35
S.Long                        20003 15 50
G.Santos                      20004 30 30
F.Farkas                      20005 22 55

这是我要编写的代码：

#include <iostream>
#include <fstream>
#include <string>
#include <sstream>
#include <stdlib.h>
using namespace std;


struct Record
{
    string name;
    int id;
    double rate;
    int hrWorked;
    double wage;

};

void read_file(string[], int); 
void calculate_wage(Record& payroll);


int main()
{
    int e = 5;    
    Record payroll[5];
    string s[5];

    cout << "Your entered file is: " << endl; 
    read_file(s, e);

    calculate_wage(payroll);


    system("pause");
    return 0;
}
void read_file(string s[], int e)
{
    ifstream myFile;
    myFile.open("Project 3.dat");
    string str;
    int i = 0;

    if (myFile.is_open())
    {
        while (getline(myFile, str))
        {
            s[i++] = str;
            cout << str << endl;
        }

        myFile.close();
    }
    else
    {
        cout << "No Data Found!" << endl;
    }

}

void calculate_wage (Record& payroll) // i know this part isnt right but im not sure what to do for this
{
    char emplresult[256];  // need to convert int to string
    payroll.wage = atoi(emplresult);
    payroll.rate = atoi(emplresult);
    payroll.hrWorked = atoi(emplresult);

    for (int i = 0; i < 5; i++)
    {
        payroll[i].wage = payroll[i].rate * payroll[i].hrWorked;
    }

}

Answer 1

使用std算法，它将使您的代码具有可读性和可维护性。 例如，您可以使用std::sort对象进行std::sort ：

#include <string>
#include <vector>
#include <algorithm>
#include <iostream>

struct Record
{
    Record(std::string name, double wage) : name(name), wage(wage) {};
    std::string name;
    int id;
    double rate;
    int hrWorked;
    double wage;

};

int main() {
    using Records = std::vector<Record>;
    Records records;
    records.push_back(Record("Pedro",20));
    records.push_back(Record("Andres",10));
    records.push_back(Record("Santiago",15));

    std::sort(records.begin(),records.end(),
              [](auto& lhs, auto& rhs) { 
                  return lhs.wage < rhs.wage; 
              });

    for (const auto& r : records) {
        std::cout << "Name: " << r.name << " wage: " << r.wage << "\n";
    }
}

输出排序的记录：

Name: Andres wage: 10
Name: Santiago wage: 15
Name: Pedro wage: 20

希望这能为您的代码带来启发！