我的程序中有一些实际上在case语句中的变量。我试图让他们去我的班级功能，但我不断收到错误。我想让变量转到SalariedEmployee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;
}
答案 0 :(得分：2)
您从未为SalariedEmployee或Administrator定义构造函数。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，但是在代码中，当你实例化emp1对象时，这些变量的值是没有意义的，所以你要做最好只使用默认构造函数，只需将大多数变量初始化为0：
SalariedEmployee::SalariedEmployee() :
wageRate(0), hours(0), netPay(0) {}
请注意，我没有打扰初始化string成员;他们自动将自己初始化为“”（无）。
此外，当您使用getline()输入数据时，您没有对其执行任何操作。调用您的一个setter函数将您从getline(cin,...)读取的值传递给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”功能。您的代码有&Administrator::print;，但不会打印任何内容。该语句的计算结果为print类的Administrator方法的地址，但您不对该地址执行任何操作，因此该语句不执行任何操作。您可能需要拨打emp1.print()，但emp1是SalariedEmployee类型的对象，而不是Administrator，print()中没有SalariedEmployee方法}类。
您的班级是否谈到虚拟继承（多态）？如果是这样，那么您可能应该在print()类中声明SalariedEmployee方法，然后在Administrator中定义它的实现。所以在class SalariedEmployee中，你会想要这个：
void print() = 0;
然后，在class Administrator中，按照您的意思定义它。但是当您创建emp1对象时，请确保其类型为Administrator，因为SalariedEmployee只是一个抽象基类（因为您只声明了从{{1继承的类型的对象）应该有一个print（）方法，但实际上并没有在SalariedEmployee类中定义print（）。
答案 1 :(得分：1)
您没有实现SalariedEmployee的构造函数。你需要这样的东西：
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)
{
}