pauldwhitman’s gists

pauldwhitman / reverseString.c

Last active November 13, 2016 09:58

Reverses a string using malloc()

	char* newString = malloc(sizeof(char)*length+1);
	for (i=length-1, j=0; i>=0; i--, j++) {
	newString[j] = input[i];
	}

pauldwhitman / chessInCPart3-checkRowAndColumnForRook.c

Last active October 12, 2015 13:48

Part of the "Chess in C" blog post series. Checks whether a square has a rook in the row or column.

	/* Calculate a rook move */
	/* Variables to store rook position of row 3 and column 4 */

	board[4][0] = ROOK;
	int pieceRow = 4;
	int pieceColumn = 0;

	/* For every row */
	for (i = 0;i <= 7; i++) {
	/* And every column */

pauldwhitman / chessInCPart3-complete.c

Last active October 13, 2015 03:57

Part of the "Chess in C" blog post series. The complete code for part 3.

	#include <stdio.h>
	#include <stdlib.h>
	#define EMPTY 0
	#define KING 1
	#define QUEEN 2
	#define ROOK 3
	#define KNIGHT 4
	#define BISHOP 5
	#define PAWN 6
	#define BREADCRUMB 9

pauldwhitman / chessInCPart4-askForInput.c

Last active December 14, 2015 17:39

Part of the "Chess in C" blog post series. Asking the user for the row and column of a chess piece. Intentionally contains a bug where the second question is asked even if the first question hasn't been answered correctly.

	/* Print and ask for the row number */
	printf("\nRow? (0..7): ");

	/* Get some input */
	if (fgets(input, sizeof(input), stdin)) {

	/* Make sure it's a number! */
	if (sscanf(input, "%d", &pieceRow)) {

	/* Make sure it's between 0 and 7! */

pauldwhitman / chessInCPart4-drawARookWithBugs.c

Last active December 14, 2015 17:39

Part of the "Chess in C" blog post series. Takes an input from the user and draws the potential moves of a rook. Intentionally contains output bugs.

	#include <stdio.h>
	#include <stdlib.h>
	#define EMPTY 0
	#define KING 1
	#define QUEEN 2
	#define ROOK 3
	#define KNIGHT 4
	#define BISHOP 5
	#define PAWN 6
	#define BREADCRUMB 9

pauldwhitman / chessInCPart4-complete.c

Last active December 14, 2015 17:39

Part of the "Chess in C" blog post series. The complete code for part 4.

	#include <stdio.h>
	#include <stdlib.h>
	#define EMPTY 0
	#define KING 1
	#define QUEEN 2
	#define ROOK 3
	#define KNIGHT 4
	#define BISHOP 5
	#define PAWN 6
	#define BREADCRUMB 9

pauldwhitman / chessInCPart1-complete.c

Last active December 14, 2015 17:48

Part of the "Chess in C" blog post series. The complete code for part 1.

	#include <stdio.h>
	#include <stdlib.h>
	#define EMPTY 0
	#define KING 1
	#define QUEEN 2
	#define ROOK 3
	#define KNIGHT 4
	#define BISHOP 5
	#define PAWN 6
	#define BREADCRUMB 9

pauldwhitman / chessInCPart1-placePieces.c

Created March 10, 2013 10:51

Part of the "Chess in C" blog post series. Code to place one side worth of chess pieces on the board.

	/* Set initial start positions */
	board[0][0] = ROOK;
	board[0][1] = KNIGHT;
	board[0][2] = BISHOP;
	board[0][3] = QUEEN;
	board[0][4] = KING;
	board[0][5] = BISHOP;
	board[0][6] = KNIGHT;
	board[0][7] = ROOK;
	board[1][0] = PAWN;

pauldwhitman / chessInCPart1-createBoard.c

Created March 10, 2013 10:54

Part of the "Chess in C" blog post series. Creates a two-dimensional array called board which simulates a chess board.

int board[8][8];

pauldwhitman / chessInCPart1-macros.c

Created March 10, 2013 10:57

Part of the "Chess in C" blog post series. Introduction to macros.

	#define EMPTY 0
	#define KING 1
	#define QUEEN 2
	#define ROOK 3
	#define KNIGHT 4
	#define BISHOP 5
	#define PAWN 6
	#define BREADCRUMB 9