ساعدونى فى تكملة البرنامج

السلام عليكم

ارجو المساعدة فى تكملة هذا البرنامج

البرنامج يقوم بعمل اله حاسبة

البرنامج مكون من 9 ملفات

6 منهم انتهو بقى 3

ملف يقوم بالتخزين

/**************************************************/[CalComand .h
#ifndef CALCCOMMANDH
#define CALCCOMMANDH

#include <string>
using std::string;

class CalcCommand
{
    private:
  //MyRef string doesn't support white space??!!! 
        string fOperand;            //125...etc
        string fOperation;          // +,-,*,..etc
        string fDescription;        // messege
        CalcCommand* fNext;
        
    public:
        CalcCommand ();
        CalcCommand (string operand, string operation, string description);
        CalcCommand (const CalcCommand& cmd); //MyRef;copy constructor
        
        string getOperand () const;
        string getOperation () const;
        string getDescription () const;
        string toString ();// ???

        //MyRef:the seter will pass the argument by refrence
        void setOperand (const string& operand);
        void setOperation (const string& operation);
        void setDescription (const string& description);
        
        // Members that allow CalcCommands to be in a LinkedList
  //MyRef: they are the seter and the geter of "fNext"
        CalcCommand* getNext () const;
        void setNext (CalcCommand* next);
};
#endif

//**************************************CalcComand.cpp
#include "calccommand.h"
#include <cstdio>
#include <string>

CalcCommand::CalcCommand ()//waseem;default constructor 
{}

CalcCommand::CalcCommand (string operand, string operation, string description)
{
    fOperand = operand;
    fOperation = operation;
    fDescription = description;
    fNext = 0; // set the pointer to 0
}

CalcCommand::CalcCommand (const CalcCommand& cmd)//copy constructor
{
    fOperand = cmd.getOperand ();
    fOperation = cmd.getOperation ();
    fDescription = cmd.getDescription ();
    fNext = cmd.getNext ();
}

string CalcCommand::getOperand () const
{
    return fOperand;
}

string CalcCommand::getOperation () const
{
    return fOperation;
}

string CalcCommand::getDescription () const
{
    return fDescription;
}
string CalcCommand::toString ()
{
    int bufsize = fOperation.size() + fOperand.size() + fDescription.size() + 3;
    char* buffer = new char [bufsize];
    sprintf (buffer, "%s\t%s\t%s\n", fOperation.c_str(), fOperand.c_str(), 
        fDescription.c_str()); //myref C_str() will return the string that passed into it
    string str (buffer);
    delete buffer;
    return str;
}
void CalcCommand::setOperand (const string& operand)
{
    fOperand = operand;
}

void CalcCommand::setOperation (const string& operation)
{
    fOperation = operation;
}

void CalcCommand::setDescription (const string& description)
{
    fDescription = description;
}

void CalcCommand::setNext (CalcCommand* next)
{
    fNext = next;
}

CalcCommand* CalcCommand::getNext () const
{
    return fNext;
}

دوال مساعدة

//******************************utils.h  
#ifndef UTILSH
#define UTILSH

#include <string>
#include <sstream>
#include <cstdlib>
#include <cctype>
using namespace std;

bool isValidDouble (string data);
double stringToDouble (string data);
string doubleToString (double data);

#endif

//*************************utils.cpp
#include "utils.h"

/**
This method runs a simple check on the string data to verify that it is a valid
double number.
*/

bool isValidDouble (string data)
{
    bool decpointcnt = 0;
    for (int i = 0; i < data.size(); i++)
    {
        if (isdigit(data) == 0)
        {
            // if the char is no digit...
            if (data != '.' && data != '-') return false;
            else if (data == '-' && i != 0) return false;
            else if (data == '.' && decpointcnt > 0) return false;
            
            if (data == '.' && decpointcnt == 0) ++decpointcnt;
        }
    }
                    
    return true;
}

/**
Converts a string into a double value. This function only produces reliable
results if data contains a valid double number. Use isValidDouble to verify
this.
*/
double stringToDouble (string data)
{
    return atof (data.c_str());  /*MyRef atof is a function included in <cstdlib> 
       & it take a parameter whitch is a pointer to string and it returns double **/ 
}

/**
Converts any double number into a string.
*/
string doubleToString (double data)
{
    stringstream stream;
    stream << data;
    string result;
    stream>>result;
    stream.clear ();
    return result;
}

يجب ان يكون Link list للملفات

اي يجب عمل ملفين وهما linkedlist.h and linkedlist.cpp

الملف linkedlist.h موجود

لكن linkedlist.cpp هذه هى مشكلتى الأولى

ها هو linkedlist.h

#ifndef LINKEDLISTH
#define LINKEDLISTH

#include "calccommand.h"
class LinkedList
{
    private:
        CalcCommand* fFirst;
        
    public:
        LinkedList ();
        LinkedList (LinkedList& list);
        ~LinkedList ();
        LinkedList& operator= (LinkedList& list);
        
        void push_back (CalcCommand* data);
        void clear ();
        
        CalcCommand* getFirst () const;
        bool isEmpty () const;
};
#endif

يجب عمل ملفين وهما Calculator.h and Calculator.cpp

الملفCalculator.h موجود

لكن Calculator.cppهذه هى مشكلتى الثانية

ها هو Calculator.h

#ifndef CALCULATORH
#define CALCULATORH

#include "linkedlist.h"
#include <string>
using std::string;
class Calculator
{
    private:
        LinkedList* fCommandHistory;
        double fSubResult;
        
    protected:
        void logCommand (string operation, string operand, string description);
    
    public:
        Calculator ();
        ~Calculator ();
        
        bool add (const string& operand);
        bool subtract (const string& operand);
        bool divide (const string& operand);
        bool multiply (const string& operand);
        bool sqrt (const string& operand);
        bool pow (const string& operand);
        void reset ();
        
        string getResult ();
        LinkedList* getCommandHistory () const;
};
#endif

ارجو المساعده فى عمل الملفين وليس مهم ال main

ملحوظة لا استخدم هنا ال inheritance

والف شكر مقدما