Create tic-tac-toe.c

tic-tac-toe.c

@@ -0,0 +1,115 @@
+#include <stdio.h>
+
+#define SIZE 3
+
+char board[SIZE][SIZE];
+
+void initializeBoard() {
+    int i, j;
+    for (i = 0; i < SIZE; i++) {
+        for (j = 0; j < SIZE; j++) {
+            board[i][j] = '_';
+        }
+    }
+}
+
+void displayBoard() {
+    int i, j;
+    for (i = 0; i < SIZE; i++) {
+        for (j = 0; j < SIZE; j++) {
+            printf("%c ", board[i][j]);
+        }
+        printf("\n");
+    }
+}
+
+int isValidMove(int row, int col) {
+    if (row < 0 || row >= SIZE || col < 0 || col >= SIZE) {
+        return 0;
+    }
+    if (board[row][col] != '_') {
+        return 0;
+    }
+    return 1;
+}
+
+int checkWin() {
+    int i;
+    // Check rows
+    for (i = 0; i < SIZE; i++) {
+        if (board[i][0] == board[i][1] && board[i][1] == board[i][2] && board[i][0] != '_') {
+            return 1;
+        }
+    }
+    // Check columns
+    for (i = 0; i < SIZE; i++) {
+        if (board[0][i] == board[1][i] && board[1][i] == board[2][i] && board[0][i] != '_') {
+            return 1;
+        }
+    }
+    // Check diagonals
+    if ((board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[0][0] != '_') ||
+        (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[0][2] != '_')) {
+        return 1;
+    }
+    return 0;
+}
+
+int makeMove(int row, int col, char symbol) {
+    if (isValidMove(row, col)) {
+        board[row][col] = symbol;
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+int switchPlayer(int player) {
+    if (player == 1) {
+        return 2;
+    } else {
+        return 1;
+    }
+}
+
+int main() {
+    int player = 1;
+    int row, col;
+    char symbol;
+
+    initializeBoard();
+
+    while (!checkWin() && player <= SIZE*SIZE) {
+        displayBoard();
+
+        printf("Player %d's turn\n", player);
+
+        if (player == 1) {
+            symbol = 'X';
+        } else {
+            symbol = 'O';
+        }
+
+        printf("Enter row: ");
+        scanf("%d", &row);
+
+        printf("Enter column: ");
+        scanf("%d", &col);
+
+        if (makeMove(row, col, symbol)) {
+            player = switchPlayer(player);
+        } else {
+            printf("Invalid move, try again\n");
+        }
+    }
+
+    displayBoard();
+
+    if (checkWin()) {
+        printf("Player %d wins!\n", switchPlayer(player));
+    } else {
+        printf("It's a tie!\n");
+    }
+
+    return 0;
+}