// Chris Myhalsky
// prog1.cpp
// 2-16-2011
// Program Description: This program aims to create a

#include <iostream>
#include <iomanip>
using namespace std;

int row, col, count, sp, end, step;
void getGridSize (int &row, int &col);
void printInitialBoard (int row, int col);
void printFinalBoard (int row, int col, int sp, int end, int step);


// This function is to allow the user to input the rows and columns.
void getGridSize (int &row, int &col)
{
   cout <<"Enter the board size. (rows X columns): ";
   cin >> row;
   cin >> col;
   cout << endl;
}


// This function displays the board with all squares numbered.
void printInitialBoard (int row, int col)
{
   int i,j,count;
   count = 0;
   getGridSize (row, col);
   for (int i=0; i< row; i++)
   {
     for (int j=0; j<col; j++)
     {
      cout << setw(2) << setfill('0') << count << " ";
      count++;
     }
    cout << endl;
   }
}


// This function gets the user to input the start position for the
// board.
int getStartPosition ()
{
   cout <<"Enter the start position: ";
   cin >> sp;
   while(sp < 0)
   {
      cout <<"The start position must be non-negative, enter again: ";
      cin >> sp;
   }
}


// This funtion prompts the user to input the end position to be used.
int getEndPosition ()
{
   cout <<"Enter the end position: ";
   cin >> end;
}


// This function prompts the user for the step.
int getStep ()
{
    cout <<"Enter the step: ";
    cin >> step;
    while (step < 0)
    {
       cout <<"The step must be non-negative, enter again: ";
	   cin >> step;
    }
}


// This function prints the final board.
void printFinalBoard (int row, int col, int sp, int end, int step)
{
    int count;
    for (int i=0; i< row; i++)
    {
      for (int j=0; j<col; j++)
      {
       if ((count == sp) || (((count % step) - (sp % step)) == 0))
          cout << setw(2) << setfill('0') << count << " ";
       else
          cout << "** ";
       count++;
      }
      cout << endl;
    }
}


//
int main ()
{
    printInitialBoard (row, col);
    getStartPosition();
    getEndPosition();
    getStep ();
    printFinalBoard (row, col, sp, end, step);

    system ("pause");
    return 0;
}