overlastet operator ^

// operator.h

#include <iostream>
#include <cmath>
#include <conio.h>
#include <string>

#ifndef OPERATOR_H_
#define OPERATOR_H_

class Operator
{
public:
    double x,y;
    Operator () {};
    Operator (double, double);
    Operator operator + (Operator);
    Operator operator ^ (Operator);
};

#endif


// operator.cpp

#include "operator.h"

Operator::Operator (double a, double b)
{
    x = a;
    y = b;
}

Operator Operator::operator+ (Operator param)
{
    Operator temp;
    temp.x = x + param.x;
    temp.y = y + param.y;

    return (temp);
}

Operator Operator::operator^ (Operator param)
{
    Operator temp;
    temp.x = pow(x, y);
    //temp.y = pow(y, x);

    return (temp);
}


// main.cpp

#include "operator.h"
#include <vector>

using namespace std;

string testString;
char *pointer;


// vectors being used
vector<string>strVec;
vector<string>upperLetters;
vector<string>lowerLetters;
vector<string>specialCharacters;
vector<string>numbers;
vector<string>op;


bool w_bool=false, o_bool = false, _continue = true;

short int i, j, total_lower, total_upper, total_special, total_whitespace, length, runAgain, k, l, val=0, time=0, count=0;
double first, second;

#define NUMLETTER 29
#define SPECIAL 38
#define MAX 1024
#define quote ""
#define NUMBERS 10
#define OP_COUNT 6

string upper[] = {"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","\x92","\x9D","\x8F"};
string lower[] = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","\x91","\x9B","\x86"};
string special[] = {"|","§","!","#","¤","%","&","/","(",")","=","+","?","`","\"","¨","<",">","*",".",",","_",":",";", "'","@","£","$","{","[","]","}","´","~","€","+","-", quote};
string operators[] = {"/", "-", "+", "*", "^", "="};
string numbersStr[] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"};
string whitespace[] = {" "};
string g_str;
string intStr="";
string intStr2="";
string opStr="";

int choice;
Operator c;

void running();
void run()
{
    cout << "Enter x^y to calculate x * x a total of y-times. Ex: 2^10 = 1024.";
    cout << "\n\nYour expression: ";
    getline(cin, testString);

    pointer = new char[testString.length() + 1];
    strcpy(pointer, testString.c_str());
    //strcpy_s(pointer,128, testString.c_str());

    while( *pointer != '\0')
    {
        g_str = *pointer;
        strVec.push_back(g_str);
        *pointer++;
        length++;
    }

    for(i=0; i<(int)strVec.size(); i++)
    {
        for(j=0, k=0; j<NUMBERS; j++, k++)
        {
            if(k>=6)
                k=0;
            // combine the numbers to a string until there is a whitespace, after a dash there comes a new strig etc.
            // slå sammen tallene til en string inntil det er et mellomrom, etter et mellomrom kommer en ny string etc.
            if( numbers[j].compare(strVec[i])==0 || strVec[i] == "-")
            {
                if(strVec[i] == "-")
                    if(time == 0)
                    {
                        intStr += "-";
                        j = NUMBERS;
                    }
                    else
                    {
                        intStr2 += "-";
                        j = NUMBERS;
                    }
                else if(time == 0 && count == 0)
                {
                    intStr += numbers[j];
                    j = NUMBERS;
                }
                else if(time == 1 && count > 0)
                {
                    intStr2 += numbers[j];
                    j = NUMBERS;
                }
            }

            // read a new string or continue on the current string
            // lese etter en ny string eller fortsettelse på nåværende string
            else if( whitespace[0].compare(strVec[i])==0)
            {
                // read the next character as long as it is a number
                if( time == 0 && strVec[i+1].compare(numbers[j]) && (!w_bool))
                {
                    count++;
                    time = 1;
                }
                else if( time == 1 && (strVec[i+1].compare(numbers[j])) && (w_bool) && (count != 1))
                {
                    time = 0;
                    count = 0;
                }
                else
                {
                    time = 1, count = 1;
                }
                j=NUMBERS;
            }

            // read the opeartor related to whitespaces etc.
            // lese operatoren i forhold til mellomrom etc.
            else if( operators[k].compare(strVec[i])==0 )
            {
                if(time == 0)
                {
                    w_bool = true;
                    time=1;
                    count=1;
                }
                else if(time == 1)
                {
                    w_bool = false;
                }

                j = NUMBERS;
            }
        }
    }

    if(intStr.size() > 0)
    {
        first = atoi(intStr.c_str());
//      cout << "\n\nfirst: " << first;
    }

    if(intStr2.size() > 0)
    {
        second = atoi(intStr2.c_str());
/*      if(intStr.size() > 0)
            cout << ", second: " << second;
        else
            cout << "\n\nsecond: " << second;
*/
        if(intStr.size() > 0 && intStr2.size() > 0)
            o_bool = true;
    }

    if(o_bool)
    {
        c = ( Operator(first, second) ^ (Operator()) );
        if(c.x > 1.7*pow(10.0, 308.0) || c.x < 1.7*pow(10.0, -308.0))
            cout << "\n\nCatching overflow\n\n";
        else
            cout << "\n\n" << first << "^" << second << " = " << c.x;
    }

    running();
}

void running()
{
    cout << "\n\nPress T or t to try again, otherwise any key to quit.\n";

    choice = _getch();

    if(choice == 't' || choice == 'T')
    {
        while(strVec.size() > 0)
            strVec.pop_back();

        first = second = NULL;
        intStr = intStr2 = "";

        time = count = 0;

        _continue = true;
        system("CLS");
        run();
    }
    else
    {
        pointer = NULL;

        while(strVec.size() > 0)
            strVec.pop_back();

        while(upperLetters.size() > 0)
            upperLetters.pop_back();

        while(lowerLetters.size() > 0)
            lowerLetters.pop_back();

        while(specialCharacters.size() > 0)
            specialCharacters.pop_back();

        while(numbers.size() > 0)
            numbers.pop_back();

        while(op.size() > 0)
            op.pop_back();

        pointer = NULL;

        _continue = false;
    }
}

int main ()
{

    for(j=0; j<NUMLETTER; j++)
    {
        upperLetters.push_back(upper[j]);
        total_upper++;
    }

    for(j=0; j<NUMLETTER; j++)
    {
        lowerLetters.push_back(lower[j]);
        total_lower++;
    }

    for(i=0; i<length; i++)
    {
        for(j=0; j<SPECIAL; j++)
        {
            if(strVec[i].compare(special[j]) == 0)
            {
                specialCharacters.push_back(special[j]);
                total_special++;
            }
        }
    }

    for(i=0; i<length; i++)
    {
        for(j=0; j<1; j++)
        {
            if(strVec[i].compare(whitespace[j]) == 0)
            {
                total_whitespace++;
            }
        }
    }

    for(i=0; i<length; i++)
    {
        for(j=0; j<OP_COUNT; j++)
        {
            op.push_back(operators[j]);
        }
    }

    for(i=0; i<NUMBERS; i++)
    {
        numbers.push_back(numbersStr[i]);
    }

    while(_continue)
    {
        run();
    }

    return 0;
}