struct Point
{
	Point *u, *d, *l, *r, *lu, *ld, *ru, *rd;
	char value;
};

#define SIZEM 10

void PrintMatrix(Point m[][SIZEM])
{
	for(int i = 0; i < SIZEM; ++i)
	{
		for(int j = 0; j < SIZEM; ++j)
		{
			std::cout << m[i][j].value;
		}

		std::cout << std::endl;
	}
}

void FillMatrix(Point arr[][SIZEM])
{
	for(int i = 0; i < SIZEM; ++i)
	{
		for(int j = 0; j < SIZEM; ++j)
		{
			arr[i][j].value = 'O';
		}
	}
}

void LinkMatrix(Point arr[][SIZEM])
{
	for(int i = 0; i < SIZEM; ++i)
	{
		for(int j = 0; j < SIZEM; ++j)
		{
			if(i-1 >= 0)
				arr[i][j].u = &arr[i-1][j];
			else
				arr[i][j].u = nullptr;

			if(i+1 <= SIZEM-1)
				arr[i][j].d = &arr[i+1][j];
			else
				arr[i][j].d = nullptr;

			if(j-1 >= 0)
				arr[i][j].l = &arr[i][j-1];
			else
				arr[i][j].l = nullptr;

			if(j+1 <= SIZEM-1)
				arr[i][j].r = &arr[i][j+1];
			else
				arr[i][j].r = nullptr;

			if(i-1 >= 0 && j -1 >= 0)
				arr[i][j].lu = &arr[i-1][j-1];
			else
				arr[i][j].lu = nullptr;

			if(i-1 >= 0 && j+1 <= SIZEM-1)
				arr[i][j].ru = &arr[i-1][j+1];
			else
				arr[i][j].ru = nullptr;

			if(i+1 <= SIZEM-1 && j-1 >= 0)
				arr[i][j].ld = &arr[i+1][j-1];
			else
				arr[i][j].ld = nullptr;

			if(i+1 <= SIZEM-1 && j+1 <= SIZEM-1)
				arr[i][j].rd = &arr[i+1][j+1];
			else
				arr[i][j].rd = nullptr;
		}
	}
}

int main()
{
	Point arr[SIZEM][SIZEM];

	LinkMatrix(arr);
	FillMatrix(arr);
	
	arr[1][1].rd->rd->rd->rd->rd->value= 'X';
	
	PrintMatrix(arr);

	std::cin.get();
}