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praavDa

Member

Registered: 2008-08-21

Posts: 34

[Solved] Learning c++ and oop -> probably just a trivial error.

Hello,

I started learning c++ under linux - I am just bored and want to learn something new. My problem is described below.

(it may look like a wall of text, but in fact it is simple)

I have 3 files: Employee.h, Employee.cpp, EmployeeTest.cpp. The code is:

Employee.h:

#include <iostream>

namespace Records
{
    const int kDefaultStartingSalary = 30000;

    class Employee
    {
        public:
            Employee();

            void  promote(int inRaiseAmount = 1000);
            void  demote (int inDemeritAmount = 1000);
            void  hire   ();
            void  fire   ();
            void  display();

            void        setFirstName(std::string inFirstName);
            std::string getFirstName();
            void         setLastName (std::string inLastName);
            std::string getLastName();
            void        setEmployeeNumber(int inEmployeeNumber);
            int         getEmployeeNumber();
            void         setSalary(int newSalary);
            int            getSalary();
            bool        getIsHired();
        
        private:
            std::string mFirstName;
            std::string mLastName;
            int         mEmployeeNumber;
            int            mSalary;
            bool        fHired;
    };
}

Employee.cpp:

#include <iostream>
#include "Employee.h"

using namespace std;

namespace Records 
{
    Employee::Employee()
    {
        mFirstName = "";
        mLastName = "";
        mEmployeeNumber = -1;
        mSalary = kDefaultStartingSalary;
        fHired = false;
    }

    void Employee::promote(int inRaiseAmount)
    {
        setSalary(getSalary() + inRaiseAmount);
    }

    void Employee::demote(int inRaiseAmount)
    {
        setSalary(getSalary() - inRaiseAmount);
    }

    void Employee::hire()
    {
        fHired = true;
    }

    void Employee::fire()
    {
        fHired = false;
    }

    void Employee::display()
    {
        cout << "Employee: " << getLastName() << ", " << getFirstName() << endl;
        cout << "--------------------------" << endl;
        cout << (fHired ? "Current Employee" : "Former Employee") << endl;
        cout << "Employee number: " << getEmployeeNumber() << endl;
        cout << "Salary: $" << getSalary() << endl;
        cout << endl;
    }

    //Accessors and setters
    
    void Employee::setFirstName(string inFirstName)
    {
        mFirstName = inFirstName;
    }

    string Employee::getFirstName()
    {
        return mFirstName;
    }

    void Employee::setLastName(string inLastName)
    {
        mLastName = inLastName;
    }

    string Employee::getLastName()
    {
        return mLastName;
    }

    void Employee::setEmployeeNumber(int inEmployeeNumber)
    {
        mEmployeeNumber = inEmployeeNumber;
    }

    int Employee::getEmployeeNumber()
    {
        return mEmployeeNumber;
    }

    void Employee::setSalary(int inSalary)
    {
        mSalary = inSalary;
    }

    int Employee::getSalary()
    {    
        return mSalary;
    }

    bool Employee::getIsHired()
    {
        return fHired;
    }
}

EmployeeTest.cpp:

#include <iostream>
#include "Employee.h"

using namespace std;
using namespace Records;

int main (int argc, char** argv)
{
    cout << "Testing Employee class." << endl;

    Employee emp;

    emp.setFirstName("Marni");
    emp.setLastName("Kleper");
    emp.setEmployeeNumber(71);
    emp.setSalary(50000);
    emp.promote();
    emp.promote(50);
    emp.hire();
    emp.display();

    return 0;
}

When I am trying to compile it with

g++ -W EmployeeTest.cpp -o EmployeeTest

I am getting the following errors:

/tmp/ccwiKDKD.o: In function `main':
EmployeeTest.cpp:(.text+0x9a): undefined reference to `Records::Employee::Employee()'
EmployeeTest.cpp:(.text+0xd1): undefined reference to `Records::Employee::setFirstName(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
EmployeeTest.cpp:(.text+0x163): undefined reference to `Records::Employee::setLastName(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
EmployeeTest.cpp:(.text+0x1ad): undefined reference to `Records::Employee::setEmployeeNumber(int)'
EmployeeTest.cpp:(.text+0x1e1): undefined reference to `Records::Employee::setSalary(int)'
EmployeeTest.cpp:(.text+0x1f4): undefined reference to `Records::Employee::promote(int)'
EmployeeTest.cpp:(.text+0x207): undefined reference to `Records::Employee::promote(int)'
EmployeeTest.cpp:(.text+0x212): undefined reference to `Records::Employee::hire()'
EmployeeTest.cpp:(.text+0x21d): undefined reference to `Records::Employee::display()'
collect2: ld returned 1 exit status

I know that I must had made a simple mistake somewhere...but I dunno where - and I would be gratefull for any help.

Best regards,
Mike.

Last edited by praavDa (2009-03-31 07:35:15)

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gvim -c "exec \"normal itYNQ#v'Z#ABG#GUR#BAYL#BAR\"|%s/#/ /g|normal ggVGg?ggVG~"

tom5760

Member

From: Philadelphia, PA, USA

Registered: 2006-02-05

Posts: 283

Website

Re: [Solved] Learning c++ and oop -> probably just a trivial error.

Seems like just a mistake on your command line.  Try:

g++ -o EmployeeTest EmployeeTest.cpp Employee.cpp

You forgot to include the other .cpp file.

Good luck!

praavDa

Member

Registered: 2008-08-21

Posts: 34

Re: [Solved] Learning c++ and oop -> probably just a trivial error.

tom5760, thank You very much - I knew this one was simple. You were right, I forgot to include other cpp files...stupid me:)

Kudos, Mate and thanks one more time.

Last edited by praavDa (2009-03-31 07:36:34)

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gvim -c "exec \"normal itYNQ#v'Z#ABG#GUR#BAYL#BAR\"|%s/#/ /g|normal ggVGg?ggVG~"