slideTiles(); 這個function是用wsad上下左右動 自己寫了很久也有很多的 bugs 沒頭緒怎麼寫 能給點建議嗎?
為了debug 遊戲加到32便算嬴了

#include <iostream>
#include <stdlib.h>
#include <time.h>


using namespace std;

//Tiles slide as far as possible in the chosen direction until they are stopped by either another tile or the edge of the grid
//If two tiles of the same number collide while moving, they will merge into a tile with the total value of the two tiles that collided.
//The resulting tile cannot merge with another tile again in the same move.

/**
 * Randomly generate a number 2 or 4
 * Randomly pick an available tile, put the number to the tile
*/



 void putTile(int &n1, int &n2, int &n3, int &n4, int &n5, int &n6, int &n7, int &n8, int &n9)
{
	// TODO: randomly put 2 or 4 to one available tile

	int put [9] = {n1 , n2 , n3 ,n4 , n5 ,n6 , n7 ,n8 ,n9};



    if(n1 == 0 && n2 == 0 && n3 == 0 && n4 == 0 && n5 == 0 && n6 == 0 && n7 == 0 && n8 == 0 && n9 == 0 ){
    	int iRand = 1 + rand() % 9;
    	put [iRand] = 2;
	    n1=put[0];
		n2=put[1];
		n3=put[2];
		n4=put[3];
		n5=put[4];
		n6=put[5];
		n7=put[6];
		n8=put[7];
		n9=put[8];

    }
    else{
    int randn  = 1 + rand() % 2 ;
    int twoorfour;
    if (randn/2 == 0){
    	twoorfour = 2;
    }
    else{twoorfour = 4;}
    int iRand = 1 + rand() % 9;
    while(put [iRand] != 0){
    	iRand = 1 + rand() % 9;
    }
    put [iRand] = twoorfour;
    n1=put[0];
	n2=put[1];
	n3=put[2];
	n4=put[3];
	n5=put[4];
	n6=put[5];
	n7=put[6];
	n8=put[7];
	n9=put[8];

    }

}


/**
 * Slide the nine tiles according to the given direction
 * */
void slideTiles(char direction, int& n1, int& n2, int& n3, int& n4, int& n5, int& n6, int& n7, int& n8, int& n9)
{
	// TODO: slide the nine tiles based on direction

	int row1[3] = {n1,n2,n3};
	int row2[3] = {n4,n5,n6};
	int row3[3] = {n7,n8,n9};



	if( direction == 'w'){


	}





		n1 = row1[0];
		n2 = row1[1];
		n3 = row1[2];
		n4 = row2[0];
		n5 = row2[1];
		n6 = row2[2];
		n7 = row3[0];
		n8 = row3[1];
		n9 = row3[2];






}

/**
 * You can use the following two helper functions
*/
int max3(int a, int b, int c) {return a > b && a > c ? a : (b > c ? b : c);}
int min3(int a, int b, int c) {return a < b && a < c ? a : (b < c ? b : c);}

/**
 * check if the maximum value of the nine input elements reaches 32
*/
bool checkWin(int n1, int n2, int n3, int n4, int n5, int n6, int n7, int n8, int n9)
{

	if(n1== 32 || n2== 32 || n3== 32|| n4== 32|| n5== 32|| n6== 32|| n7== 32|| n8== 32 || n9 == 32)
         {return true;}
         else {
        	    return false;
        	  }
}

/**
 * check if there are no available tiles
 * player loses the game if all grids are filled
*/
bool checkLose(int n1, int n2, int n3, int n4, int n5, int n6, int n7, int n8, int n9)
{
	// TODO: check if player loses

	if(n1!= 0 && n2 != 0&& n3!= 0&& n4!= 0&& n5!= 0&& n6!= 0&& n7!= 0&& n8 != 0&& n9 != 0)
	{return true;}
	else{
		return false;

	}

}


// simplified 2048 game: 3x3 game board to reach 32
int a11 = 32, a12 = 0, a13 = 0, a21 = 0, a22 = 0, a23 = 0, a31 = 0, a32 = 0, a33 = 0;


int main()
{
	// 3x3 empty game board
	int a11 = 0, a12 = 0, a13 = 0, a21 = 0, a22 = 0, a23 = 0, a31 = 0, a32 = 0, a33 = 0;


	cout << "Welcome to 2048 Game!" << endl
			<< "input w|a|s|d to slide the tiles." << endl
			<< "Game start! Get 32 to win!" << endl << endl;

	srand((unsigned)time(NULL));
	while (true)
	{
		//new tile will randomly appear in an empty spot on the board with a value of either 2 or 4
		putTile(a11, a12, a13, a21, a22, a23, a31, a32, a33);

		//print game board
		cout << a11 << '\t' << a12 << '\t' << a13 << '\n'
				<< a21 << '\t' << a22 << '\t' << a23 << '\n'
				<< a31 << '\t' << a32 << '\t' << a33 << '\n'
				<< endl;

		//grab player's choice
		cout << "Input direction:" << endl;
		char direction;
		cin >> direction;

		// slide tiles
		slideTiles(direction, a11, a12, a13, a21, a22, a23, a31, a32, a33);

		// check win
		if (checkWin(a11, a12, a13, a21, a22, a23, a31, a32, a33))
		{
			cout << "Congratulations! You Win!\n" << endl;
			break;
		}
		// check lose
		if (checkLose(a11, a12, a13, a21, a22, a23, a31, a32, a33))
		{
			cout << "Sorry! You Lose!\n" << endl;
			break;
		}
	} // end of game loop

	// final game board
	cout << a11 << '\t' << a12 << '\t' << a13 << '\n'
			<< a21 << '\t' << a22 << '\t' << a23 << '\n'
			<< a31 << '\t' << a32 << '\t' << a33 << '\n'
			<< endl;
	return 0;
}