#include "stdafx.h"
#include <iostream>
#include <conio.h>
#include <iomanip>
#include <time.h>

int FunctionEnterPrice(bool bFlagsDisplay, int iDecimalNumber,  int iMinPrice, int iMaxPrice);

int _tmain(int argc, _TCHAR* argv[])
{
	for(;;system("cls"))
	{
    std::cout<<"Enter your price "<<std::endl;
    int a = FunctionEnterPrice(false, 9, 10, 30);
    std::cout<<"You enter the price "<< a <<std::endl;
    _getch();

	}
	
	
	return 0;
}


int FunctionEnterPrice(bool bFlagsDisplay, int iDecimalNumber = 4,  int iMinPrice = 0, int iMaxPrice = 0)
{
	if(iDecimalNumber > 9)
	{
    iDecimalNumber = 9;
	}
	int cInputKay;
	int iResult = 0;
	char *cNumbersArr = new char[iDecimalNumber+1];
	*cNumbersArr = '\0';
	for(int i = 0;;i = 0)
	{
    for(bool bFlags = false;;)
    {
    	cInputKay = _getch();
    	system("cls");
    	switch(cInputKay)
    	{
        case 48:
        case 49:
        case 50:
        case 51:
        case 52:
        case 53:
        case 54:
        case 55:
        case 56:
        case 57:
        	cNumbersArr[i++] = (char)cInputKay;
        	cNumbersArr[i] = 0;
        	if(i == iDecimalNumber)
        	{
            bFlags = true;
        	}
        	break;
        case 13:
        	cNumbersArr[i] = 0;
        	bFlags = true;
        	break;
        case 8:
        	if(i == 0)
        	{
            break;
        	}
        	cNumbersArr[--i] = 0;
        	break;
    	}
    	std::cout<< cNumbersArr;
    	if(bFlags)
    	{
        break;
    	}
    }
    if(bFlagsDisplay)
    {
    	iResult = atoi(cNumbersArr);
    	if(iResult <= iMaxPrice && iResult >= iMinPrice)
    	{
        system("cls");
        delete[] cNumbersArr;
        return iResult;
    	}
    	else
    	{
        system("cls");
        std::cout<<std::endl;
        std::cout<<"Not among the specified price range (Minimum: \"";
        std::cout<<iMinPrice<<"\", Maximum: \""<<iMaxPrice<<"\")"<<std::endl;
        std::cout<<"To continue, press any key... ";
        _getch();
        system("cls");
        continue;
    	}
    }
    else
    {
    	system("cls");
    	iResult = atoi(cNumbersArr);
    	delete[] cNumbersArr;
    	return iResult;
    }
	}
	
	system("cls");
	delete[] cNumbersArr;
	return -1;
}