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我的程序中有一些变量实际上在 case 语句中。我试图让他们参加我的课堂活动，但我一直收到错误消息。我想将变量转到 SalriedEmployee 和 Administrator 类。 

//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

};


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()
{
    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 << " Dollars\n";
    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;

    string date = "January 12, 2013";


    cout<<setprecision(2)
    <<setiosflags(ios::fixed)
    <<setiosflags(ios::showpoint);

    SalariedEmployee emp1(name, soc,net, wage, hrs, dept);


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;
}
4

2 回答 2

2

您从未定义过 SalriedEmployee 或 Administrator 的构造函数。另一个回答者展示了如何定义与现有定义中的签名匹配的构造函数的实现，但是在您的代码中，emp1无论如何实例化对象时，这些变量的值都是没有意义的，因此您最好只使用默认构造函数，您只需将大多数变量初始化为 0：

SalariedEmployee::SalariedEmployee() :
    wageRate(0), hours(0), netPay(0) {}

请注意，我没有费心初始化string成员；他们自动将自己初始化为“”（无）。

此外，当您使用 输入数据时getline()，您不会对它做任何事情。调用您的 setter 函数之一，将您读取的值传递getline(cin,...)给您的 emp1 对象。您的选项“3”看起来应该打印您之前输入的任何内容，但您没有调用任何“打印”函数。您的代码有&Administrator::print;，但不会打印任何内容。该语句计算为类print方法的地址Administrator，但您对该地址不做任何事情，因此该语句什么也不做。您可能想调用emp1.print(), butemp1是类型的对象SalariedEmployee， not Administrator，并且类中没有print()方法SalariedEmployee。

您的班级是否讨论过虚拟继承（多态性）？如果是这样，那么您可能应该print()在您的类中声明一个方法SalariedEmployee，然后在Administrator. 所以在 中class SalariedEmployee，你会想要这个：

void print() = 0;

然后，在 中class Administrator，就像您所做的那样定义它。但是当你创建你的emp1对象时，确保它的类型是Administrator因为SalariedEmployee它只是一个抽象基类（因为你只声明继承自的类型的对象SalariedEmployee应该有一个 print() 方法，但 print() 实际上并没有定义在类SalariedEmployee）。

于 2013-01-10T21:22:53.380 回答
1

您没有实现 SalariedEmployee 的构造函数。你需要类似的东西：

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)
{
}
于 2013-01-10T21:18:37.017 回答