'Added main function with a code for testing a winner;'

src/tictactoe.c

@@ -0,0 +1,120 @@
+/*
+ ============================================================================
+ Name        : tictactoe.c
+ Author      : 
+ Version     :
+ Copyright   : Your copyright notice
+ Description : Hello World in C, Ansi-style
+ ============================================================================
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/*
+ * 0 - nobody wins
+ * 1 - circles win
+ * 2 - crosses win
+ */
+int testForWin(int* board) {
+	// TODO make the code clean
+
+	// circles horizontal
+	if (board[0] == 1 && board[1] == 1 && board[2] == 1)
+		return 1; // circles in 1st line
+	if (board[3] == 1 && board[4] == 1 && board[5] == 1)
+		return 1; // circles in 2nd line
+	if (board[6] == 1 && board[7] == 1 && board[8] == 1)
+		return 1; // circles in 3rd line
+
+	// circle vertical
+	if (board[0] == 1 && board[3] == 1 && board[6] == 1)
+		return 1; // circles in 1st line
+	if (board[1] == 1 && board[4] == 1 && board[7] == 1)
+		return 1; // circles in 2nd line
+	if (board[2] == 1 && board[5] == 1 && board[8] == 1)
+		return 1; // circles in 3rd line
+
+	// circle diagonal
+	if (board[0] == 1 && board[4] == 1 && board[8] == 1)
+		return 1; // circles in 1st line
+	if (board[2] == 1 && board[4] == 1 && board[6] == 1)
+		return 1; // circles in 2nd line
+
+	// crosses horizontal
+	if (board[0] == 2 && board[1] == 2 && board[2] == 2)
+		return 2; // crosses in 1st line
+	if (board[3] == 2 && board[4] == 2 && board[5] == 2)
+		return 2; // crosses in 2nd line
+	if (board[6] == 2 && board[7] == 2 && board[8] == 2)
+		return 2; // crosses in 3rd line
+
+	// crosses vertical
+	if (board[0] == 2 && board[3] == 2 && board[6] == 2)
+		return 2; // crosses in 1st line
+	if (board[1] == 2 && board[4] == 2 && board[7] == 2)
+		return 2; // crosses in 2nd line
+	if (board[2] == 2 && board[5] == 2 && board[8] == 2)
+		return 2; // crosses in 3rd line
+
+	// crosses diagonal
+	if (board[0] == 2 && board[4] == 2 && board[8] == 2)
+		return 2; // crosses in 1st line
+	if (board[2] == 2 && board[4] == 2 && board[6] == 2)
+		return 2; // crosses in 2nd line
+	return 0;
+}
+
+void printBoard(int* board) {
+	// TODO make this function smaller, and clean
+	printf("%c | %c | %c\n",
+			board[0] == 1 ? 'O' : (board[0] == 2 ? 'X' : ' '),
+			board[1] == 1 ? 'O' : (board[1] == 2 ? 'X' : ' '),
+			board[2] == 1 ? 'O' : (board[2] == 2 ? 'X' : ' '));
+	printf("------------\n");
+	printf("%c | %c | %c\n",
+			board[3] == 1 ? 'O' : (board[3] == 2 ? 'X' : ' '),
+			board[4] == 1 ? 'O' : (board[4] == 2 ? 'X' : ' '),
+			board[5] == 1 ? 'O' : (board[5] == 2 ? 'X' : ' '));
+	printf("------------\n");
+	printf("%c | %c | %c\n",
+			board[6] == 1 ? 'O' : (board[6] == 2 ? 'X' : ' '),
+			board[7] == 1 ? 'O' : (board[7] == 2 ? 'X' : ' '),
+			board[8] == 1 ? 'O' : (board[8] == 2 ? 'X' : ' '));
+}
+
+int main(void) {
+	int board[9];
+	for (int i = 0; i < 9; i++)
+		board[i] = 0;
+
+	board[0] = 1;
+	board[4] = 1;
+	board[8] = 1;
+
+	// clean board
+	printBoard(board);
+
+	// logic
+	while (1) {
+		// 1. TODO ask user for the move
+		//		TODO validate the move (field has to be empty)
+		//		TODO check if user wins, then print and exit
+		//           the loop
+
+		// 2. TODO computer makes the move
+
+		// 3. TODO print the board
+
+		// 4. check if there is a winner, if there is a
+		//         winner then exit the loop
+		int result = testForWin(board);
+		if (result != 0) {
+			printf("%s WINS!\n", result == 1 ? "circles" : "crosses");
+			break;
+		}
+	}
+
+	puts("TicTacToe finished");
+	return EXIT_SUCCESS;
+}