refactoring: correct the errors

src/main/c/GameTic_Tac_Toe/game.c

@@ -1,5 +1,6 @@
 #include <stdio.h>
 
+const int BOARD_SIZE = 3;
 char board[3][3] = {{'1', '2', '3'},
                     {'4', '5', '6'},
                     {'7', '8', '9'}};
@@ -52,8 +53,6 @@ char checkWinner() {
 }
 
 // Funktion zur Überprüfung, ob das Spiel unentschieden ist
-const int BOARD_SIZE = 3;
-
 int isBoardFull() {
     for (int i = 0; i < BOARD_SIZE; i++) {
         for (int j = 0; j < BOARD_SIZE; j++) {
@@ -67,7 +66,7 @@ int isBoardFull() {
 
 
 // Funktion zum Zug eines Spielers
-enum switchPlayer(enum currentPlayer) {
+char switchPlayer(char currentPlayer) {
     return (currentPlayer == PLAYER_X) ? PLAYER_O : PLAYER_X;
 }
 
@@ -80,14 +79,14 @@ int isValidMove(int choice) {
 
 void makeMove() {
     int choice;
-    printf("Spieler %c, waehle eine Zahl (1-9): ", currentPlayer == PLAYER_X) ? 'X' : 'O');
+    printf("Spieler %c, waehle eine Zahl (1-9): ", (currentPlayer == PLAYER_X) ? 'X' : 'O');
     scanf("%d", &choice);
 
 // Konvertiere die Zahl in Zeilen- und Spaltenindex
 if (isValidMove(choice)) {
     int row = (choice - 1) / BOARD_SIZE;
     int col = (choice - 1) % BOARD_SIZE;
-     board[row][col] = currentPlayer == PLAYER_X) ? 'X' : 'O';
+     board[row][col] = (currentPlayer == PLAYER_X) ? 'X' : 'O';
      currentPlayer = switchPlayer(currentPlayer);
 
 } else {