如何将变量传递给类

How to pass variables to a class

本文关键字:变量      更新时间:2023-10-16

我已经在这个代码上工作了相当长的一段时间了,我之前已经发布了它,但是在修复了这个问题之后,又出现了另一个问题,所以我创建了一个新的帖子,这个问题的名字。问题是,我显然没有以正确的方式传递变量给Administrator类。我已经尝试了两种方法,这是我所有的书显示,都给了我一个错误,说错误C2512: ' salarieemployee ':没有适当的默认构造函数可用"。我试过了

  //Lynette Wilkins
//Week 12
#include <iostream>
#include <cstdlib>
#include <string>
#include <iomanip>
#include <cmath>
using namespace std;
class SalariedEmployee
{
private:
    double wageRate;
    int hours;
protected:
    string name;
    string ssn;
    double netPay;
    string department;
public:
    SalariedEmployee(string n, string s, double np, double w, int h, string d);
     ~SalariedEmployee() {cout<<endl;}
     string Getname();  //returns name
     string Getssn();   // returns social security number
     double GetnetPay(); //returns netPay
     string Getdepartment(); // returns department
     double GetwageRate(); //returns wage rate
     int Gethours(); //returns hours
     void Setname(string); //sets name
     void Setssn(string); //sets ssn
     void SetnetPay(double); //sets net pay
     void Setdepartment(string); //sets department
     void SetwageRate(double); //sets wage rate
     void Sethours(int); //sets hours
};
SalariedEmployee::SalariedEmployee(string n, string s, double np, double w, int h, string d) : name(n),
      ssn(s),
      netPay(np),
      wageRate(w),
      hours(h),
      department(d)
{}

string SalariedEmployee::Getname()
{
    return name;
}
string SalariedEmployee::Getssn()
{
    return ssn;
}
double SalariedEmployee::GetnetPay()
{
    return netPay;
}
double SalariedEmployee::GetwageRate()
{
    return wageRate;
}
int SalariedEmployee::Gethours()
{
    return hours;
}
void SalariedEmployee::Setname(string n)
{
    name = n;
}
void SalariedEmployee::Setssn(string s)
{
    ssn = s;
}
void SalariedEmployee::SetnetPay(double np)
{
    netPay = np;
}
void SalariedEmployee::Setdepartment(string d)
{
    department = d;
}

void SalariedEmployee::SetwageRate(double w)
{
    wageRate = w;
}
void SalariedEmployee::Sethours(int h)
{
    hours = h;
}

class Administrator : public SalariedEmployee
{
protected:
    string title;
    string responsi;
    string super;
    double salary;
public:
    Administrator(string t, string r, string s, double sa);
     ~Administrator();
    string Gettitle();
    string Getresponsi();
    string Getsuper();
    double Getsalary();
    void Settitle(string);
    void Setresponsi(string);
    void Setsuper(string);
    void Setsalary(double);
    void print();
};

Administrator::Administrator(string t, string r, string s, double sa) :  title(t), responsi(r), super(s), salary(sa)
{
}
Administrator::~Administrator()
{
    cout<<endl;
}
string Administrator::Gettitle()
{
    return title;
}
string Administrator::Getresponsi()
{
    return responsi;
}
string Administrator::Getsuper()
{
    return super;
}
double Administrator::Getsalary()
{
    return salary;
}
void Administrator::Settitle(string ti)
{
    title = ti;
}
void Administrator::Setresponsi(string re)
{
    responsi = re;
}

void Administrator::Setsuper(string su)
{
    super=su;
}
void Administrator::Setsalary(double sa)
{
    salary= sa;
}
void Administrator::print( )
  {
    cout << "n_______________________________________________n";
    cout << "Pay to the order of " << name<< endl;
    cout << "The sum of " << netPay << " Dollarsn";
    cout << "_________________________________________________n";
    cout <<endl<<endl;
    cout << "Employee Number: " << ssn << endl;
    cout << "Salaried Employee. Regular Pay: " 
       << salary << endl; 
    cout << "_________________________________________________n";
  }


int main()
{

    string name;
    string soc;
    double net = 0;
    double wage = 0;
    int hrs = 0;
    string dept;
    string admtitle;
    string resp;
    string sup;
    double sal = 0;
    int response = 0;
    string date = "January 12, 2013";

    cout<<setprecision(2)
    <<setiosflags(ios::fixed)
    <<setiosflags(ios::showpoint);
    SalariedEmployee emp1(name, soc,net, wage, hrs, dept);
    Administrator adm1(admtitle, resp, sup, sal);

while(response != 4){
    cout<<"Employee and Administrator Salary Program "<<endl;
    cout<<"(You will have to enter data first before you do anything else)"<<endl<<endl;
    cout<<"Enter Employee Data,  Enter 1"<<endl;
    cout<<"Change data,   Enter 2"<<endl;
    cout<<"Print Check,   Enter 3"<<endl;
    cout<<"End Program, Enter 4"<<endl<<endl;
    cout<<"Please make your selection"<<endl;

cin>> response;
    switch (response)

    {
    case 1:
        cout <<"The employee's data will be entered here: "<<endl<<endl;
        cout<<"Enter the employees name: ";
        cin.ignore();
        getline(cin, name);
        cout<<"Enter the employees social security number: ";
         cin.ignore();
        getline(cin, soc);
        cout<<"Enter the employees net pay: ";
        cin>>net;
        cout<<"Enter the employees wage rate: ";
        cin>>wage;
        cout<<"Enter the number of hours the employer worked: ";
        cin>>hrs;
        cout<<"Enter the employees title: ";
        cin.ignore();
        getline(cin,admtitle);
        cout<<"Enter the employees area responsibility: ";
        cin.ignore();
        getline(cin, resp);
        cout<<"Enter the employees salary: ";
        cin>>sal;

        cout<<endl<<endl<<endl;

        break;


    case 2:
        cout<<"Please change the data you entered previously here. " <<endl<<endl;
        cout<<"Enter the employees name: ";
        cin.ignore();
        getline(cin, name);
        cout<<"Enter the employees social security number: ";
         cin.ignore();
        getline(cin, soc);
        cout<<"Enter the employees net pay: ";
        cin>>net;
        cout<<"Enter the employees wage rate: ";
        cin>>wage;
        cout<<"Enter the number of hours the employer worked: ";
        cin>>hrs;
        cout<<"Enter the employees title: ";
        cin.ignore();
        getline(cin,admtitle);
        cout<<"Enter the employees area responsibility: ";
        cin.ignore();
        getline(cin, resp);
        cout<<"Enter the employees salary: ";
        cin>>sal;

        cout<<endl<<endl<<endl;
break;

    case 3:
        cout <<"Information Printed"<<endl<<endl;
        cout<<"_____________________________"<<date<<endl;
        &Administrator::print;

        break;

    default:
        cout<<endl<<endl
            <<"Invalid Selection! Try Again"<<endl;
        exit(1);
}
}


    system("PAUSE");
    return 0;
}

Administrator(string t, string r, string s, double sa);将尝试调用基类的默认构造函数,如果您没有指定另一个。(默认构造函数是可以不带任何参数调用的构造函数)

基类没有默认构造函数,因此会出现错误。

调用基类的另一个构造函数:

Administrator::Administrator(string t, string r, string s, double sa) :  
SalariedEmployee(<args>), //base constructor call
title(t), responsi(r), super(s), salary(sa) //members
{
}