[英]IF statement not executing, but ELSE IF statements are working fine
我一直在學習Java,並且正在開發一個簡單的井字游戲。 我相信除了IF語句未執行之外,其他所有工作都正常進行。 因此,當播放器連續或對角獲得三個X時,IF語句將不會執行。 但是,每當球員並列或獲得三個O時,這兩個ELSE IF語句都可以正常工作。 任何幫助將非常感激!
public static void check_status()
{
if ( (board[0][0]=='X' && board[0][1]=='X' && board[0][2]=='x') ||
(board[1][0]=='X' && board[1][1]=='X' && board[1][2]=='x') ||
(board[2][0]=='X' && board[2][1]=='X' && board[2][2]=='x') ||
(board[0][0]=='X' && board[1][0]=='X' && board[2][0]=='x') ||
(board[0][1]=='X' && board[1][1]=='X' && board[2][1]=='x') ||
(board[0][2]=='X' && board[1][2]=='X' && board[2][2]=='x') ||
(board[0][0]=='X' && board[1][1]=='X' && board[2][2]=='x') ||
(board[0][2]=='X' && board[1][1]=='X' && board[2][0]=='x') )
{
System.out.println();
System.out.println("X wins the game!");
end_game = 1;
}
else if ( (board[0][0]=='O' && board[0][1]=='O' && board[0][2]=='O') ||
(board[1][0]=='O' && board[1][1]=='O' && board[1][2]=='O') ||
(board[2][0]=='O' && board[2][1]=='O' && board[2][2]=='O') ||
(board[0][0]=='O' && board[1][0]=='O' && board[2][0]=='O') ||
(board[0][1]=='O' && board[1][1]=='O' && board[2][1]=='O') ||
(board[0][2]=='O' && board[1][2]=='O' && board[2][2]=='O') ||
(board[0][0]=='O' && board[1][1]=='O' && board[2][2]=='O') ||
(board[0][2]=='O' && board[1][1]=='O' && board[2][0]=='O') )
{
System.out.println();
System.out.println("O wins the game!");
end_game = 1;
}
else if ( (board[0][0]!=' ' && board[0][1]!=' ' && board[0][2]!=' ') &&
(board[1][0]!=' ' && board[1][1]!=' ' && board[1][2]!=' ') &&
(board[2][0]!=' ' && board[2][1]!=' ' && board[2][2]!=' ') )
{
System.out.println();
System.out.println("The game is a tie.");
end_game = 1;
}
}
這也是我第一次在Stack Overflow上發布文章,如果問題或格式不正確,我們深表歉意。
完整代碼:
import java.util.Scanner;
public class TicTacToe
{
private static char[][] board = new char[3][3];
private static int end_game = 0;
public static void main( String[] args )
{
Scanner keyboard = new Scanner(System.in);
initBoard();
displayBoard();
do
{
System.out.println();
System.out.print("\'O\', choose your location (row, column): ");
int O_row = keyboard.nextInt();
int O_col = keyboard.nextInt();
board[O_row][O_col] = 'O';
System.out.println();
displayBoard();
check_status();
if (end_game==1){
break;
}
System.out.println();
System.out.print("\'X\', choose your location (row, column): ");
int X_row = keyboard.nextInt();
int X_col = keyboard.nextInt();
board[X_row][X_col] = 'X';
System.out.println();
displayBoard();
check_status();
} while (end_game==0);
}
public static void check_status()
{
if ( (board[0][0]=='X' && board[0][1]=='X' && board[0][2]=='x') ||
(board[1][0]=='X' && board[1][1]=='X' && board[1][2]=='x') ||
(board[2][0]=='X' && board[2][1]=='X' && board[2][2]=='x') ||
(board[0][0]=='X' && board[1][0]=='X' && board[2][0]=='x') ||
(board[0][1]=='X' && board[1][1]=='X' && board[2][1]=='x') ||
(board[0][2]=='X' && board[1][2]=='X' && board[2][2]=='x') ||
(board[0][0]=='X' && board[1][1]=='X' && board[2][2]=='x') ||
(board[0][2]=='X' && board[1][1]=='X' && board[2][0]=='x') )
{
System.out.println();
System.out.println("X wins the game!");
end_game = 1;
}
else if ( (board[0][0]=='O' && board[0][1]=='O' && board[0][2]=='O') ||
(board[1][0]=='O' && board[1][1]=='O' && board[1][2]=='O') ||
(board[2][0]=='O' && board[2][1]=='O' && board[2][2]=='O') ||
(board[0][0]=='O' && board[1][0]=='O' && board[2][0]=='O') ||
(board[0][1]=='O' && board[1][1]=='O' && board[2][1]=='O') ||
(board[0][2]=='O' && board[1][2]=='O' && board[2][2]=='O') ||
(board[0][0]=='O' && board[1][1]=='O' && board[2][2]=='O') ||
(board[0][2]=='O' && board[1][1]=='O' && board[2][0]=='O') )
{
System.out.println();
System.out.println("O wins the game!");
end_game = 1;
}
else if ( (board[0][0]!=' ' && board[0][1]!=' ' && board[0][2]!=' ') &&
(board[1][0]!=' ' && board[1][1]!=' ' && board[1][2]!=' ') &&
(board[2][0]!=' ' && board[2][1]!=' ' && board[2][2]!=' ') )
{
System.out.println();
System.out.println("The game is a tie.");
end_game = 1;
}
}
public static void initBoard()
{
// fills up the board with blanks
for ( int r=0; r<3; r++ )
for ( int c=0; c<3; c++ )
board[r][c] = ' ';
}
public static void displayBoard()
{
System.out.println(" 0 " + board[0][0] + "|" + board[0][1] + "|" + board[0][2]);
System.out.println(" --+-+--");
System.out.println(" 1 " + board[1][0] + "|" + board[1][1] + "|" + board[1][2]);
System.out.println(" --+-+--");
System.out.println(" 2 " + board[2][0] + "|" + board[2][1] + "|" + board[2][2]);
System.out.println(" 0 1 2 ");
}
}
board[0][2]=='x'
您在前兩列中使用大X
,在最后一列中使用小x
,這可能是問題的根源
你應該看一看在X
S和x
使用的是在你的代碼秒。 字符區分大小寫。
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