/*
 **************************************************************************
 * Program name : 057_Guess_an_number (Version 1.00)                      *
 * Author       : Duck Wong                                               *
 * Language     : C / C++                                                 *
 * Compiler     : Boodshed Dec-C++ compiler Ver 3.95                      *
 * Computer     : PII350                                                  *
 * O/S          : Windows 98                                              *
 **************************************************************************
 * Version 1.00 : 2000/11/29 - first version                              *
 **************************************************************************
 * Description  : (a) Guess an integer number that is selected by you.    *
 *                (b) User keyin the current status  (C,H or L)           *
 *                (c) Until the computer find your number                 *
 *                (d) Try again ?                                         *
 **************************************************************************
*/

#include <iostream.h>
#include <stdlib.h>
#include <iomanip.h>
#include <time.h>

int main()
{
 // part 1 : declaration
 int maxval, minval, fir, cor, err;
 char resp, Again;

 srand(time(NULL));
 do {
     cor=1;
     err=1;
     maxval=100;
     minval=1;
     cout << "\nNumber Guesser\n"
          << "\nPick a number between 1 and 100."
          << "\n-----------------------------------------------------------\n";

 do {
     fir=(rand() % (maxval-minval+1))+minval;

     cout << "\ncurrent status :  your number is greater than or equal to "
          << minval
          << "\n                  and also smaller than or equal to "
          << maxval;
     cout << "\n\nIs your number " << fir << " ?"
          << "\n\n(C)Correct, (L)too low or (H)too high]  ? ";
     cin >> resp;

     if (resp=='c' || resp=='C')
     {
      cout << "\n\nYes! Your number is "  << fir << "!";
      cor++;
     }
     else if (resp=='h' || resp=='H')
     {
     maxval=fir-1;
     }
     else if (resp=='l' || resp=='L')
     {
     minval=fir+1;
     }
     else
     {
     cout << "\nYou did not enter a correct value/n.";
     cout << "\nPlease enter L/H/C.";
     }
     if (maxval == minval)
     {
     cout << "\n\nYes! I find it.  Your number is "
          << minval << "!";
     cor++;
     }
     else if (maxval < minval )
     {
     cout << "\n\nDon't tell lie! "
          << "I know that your number should be "
          << fir;
     err++;
     }
    }while ((cor<2) & (err<2));

     // part 4 : try another number ?
     cout << "\n\nTry another number (Y/N) : ";
     cin  >> Again;
     cout << "\n";
    } while (Again=='Y' || Again=='y');
 cout << "\n" << endl;

 system("PAUSE");
 return 0;
}