#include <stdio.h>

#define N            30
#define CUBE         6
#define INDEX_PlAYER 24
#define ZERO         0
#define ONE          1
#define TWO          2
#define ABS(x)       (x) * (((2 * (x)) + 1) % 2)
#define BOOLEAN      unsigned short

//---------------------------------------------------------------------------------------
//                                              NumBBiggerThenNumA
//                                              ------------------
//
// General      : Checks if the second number (B) is greater than the first number (A).
//
// Parameters   :  
//          number1 -  first number (int)
//          number2 -  second number (int)
//
// Return value : If the second number (B) is greater than the first number (A) (BOOLEAN).
//
//---------------------------------------------------------------------------------------
// Programmer : Cohen Idan
// Student No : None
// Date       : 21.10.2019
//---------------------------------------------------------------------------------------
BOOLEAN NumBBiggerThenNumA(int a, int b)
{
    int sub = a - b + ONE;
    BOOLEAN answer = (ONE / (ABS(sub) + (sub) + ONE));
    return answer;
}

//---------------------------------------------------------------------------------------
//                                              ChangeBool
//                                              ----------
//
// General      : Boolean variable inverse.
//
// Parameters   :  
//          bool1 -  Boolean variable (BOOLEAN)
//
// Return value : Boolean variable (BOOLEAN).
//
//---------------------------------------------------------------------------------------
// Programmer : Cohen Idan
// Student No : None
// Date       : 21.10.2019
//---------------------------------------------------------------------------------------
BOOLEAN ChangeBool(BOOLEAN bool1)
{
    BOOLEAN answer = ++bool1 % TWO;
    return answer;
}

//---------------------------------------------------------------------------------------
//                                              Exercise 2
//                                              ----------
//
// General : The program checks the amount of cube flips for which the player
//           can advance his tool forward.
//
// Input   : None.
//
// Process : The program counts the number of zeros on the board to position 6
//           after the player's position on the board.
//
// Output  : The amount of cube throws for which the player can advance
//           his tool (unsigned short).
//
//---------------------------------------------------------------------------------------
// Programmer : Cohen Idan
// Student No : 211675038
// Date       : 23.10.2019
//---------------------------------------------------------------------------------------
void main(void)
{
    unsigned short board[N] = 
    {0,1,0,1,0,1,0,0,1,1,1,0,0,0,1,1,0,1,0,1,0,0,0,0,0,1,1,1,1,0};

    unsigned short sum       = ZERO,
                   counter   = INDEX_PlAYER,
                   last_step = counter + CUBE;

    for (++counter; NumBBiggerThenNumA(counter, last_step); counter++)
    {
        sum += ChangeBool(board[counter]);
    }

    printf("Sum: %hu\n", sum);
}