C++ programming. Bid only if you know you can make a perfect score

User Generated

gevfun44

Programming

Description

In C++

Concepts: multi-dimension array and the Knight's Tour Problem

A chess board consists of an 8 x 8 "array" of squares:

int board[ROW][COL]={0};

A knight may move perpendicular to the edges of the board, two squares in any of the 4 directions, then one square at right angles to the two-square move. The following lists all 8 possible moves a knight could make from board [3][3]:

board[5][4] or

board[5][2] or

board[4][5] or

board[4][1] or

board[1][4] or

board[1][2] or

board[2][5] or

board[2][1] or

<pre class="brush: cpp">

8 1

7 2

K

6 3

5 4

</pre>

Write a function named LegalMove, in class knight, which accepts a ROW and COL parameter for the

knight's current position, and a move number parameter (see table above) for the proposed new position.

The method should return true if the proposed move is legal, and false if not legal. The method should also pass reference parameters set by the method to the ROW and COL coordinates of the destination square if the move is legal.

You will need at least the following variables:

<pre class="brush: cpp">

const int ROW = 8, COL = 8, MOVES = 8;

int row;

int col;

int board[ROW][COL]; //chess board

int offsets[MOVES][2]; //knight move offsets (delta

values for row, col)

int countLegalMoves; //number of legal moves from row, col

int moves[MOVES]; //legal move indices

Tour(int row=0, int col=0);

void ClearBoard();

int GetLegalMoves();

void Move(int move, int sequence); //for brute force

void ShowBoard();

</pre>

A function should initialize row and col to passed values, and should initialize the offsets array to the array differences (+/- 1 or 2) for row and col for each of the 8 moves.

GetLegalMoves() should fill the moves array with the move number (1-8) and each legal move that is possible from row, col, and return the number of moves in the array (0-8) and store this value in countLegalMoves.

Write some driver code in main that will place a knight at a given position, and test some possible moves (including some off-the-board moves).

If you have time, code the ClearBoard and the ShowBoard methods as well. It might be even more interesting to start on a full brute-force type Knight's Tour program. I say start on, because there is not enough time in a class period for even a fast programmer to complete such a program.

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Explanation & Answer

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Anonymous
Just what I needed…Fantastic!

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