Snake Game

[Berkaboy422]

I need help to make the tail, I've watched several guides but I can't understand how to do it. I need help with the logics and how I should print the tail and make it follow the head in every direction.

#include <iostream>
#include <conio.h>
#include "mbb.h"
#include <time.h>
#include <string>
using namespace std;
//-----------------------------------------------------
int x, y;
int dX = 0, dY = 0;
int speed = 100;
int width = 63;
int height = 24;
int fruitX = 0;
int fruitY = 0;
int score;
int tailX[100], tailY[100];
int nTail;

// Functions ------------------------------------------------------------
void runGame();
void handleKey(int);
void map();
int theENd();
int apple(int score);
void innanspel1();
int menu(int val);
//------------------------------------------------------------------------
int main()
{
	//menu();
	runGame();
	return 0;
}
//int menu(int val)
///{
    //int key = 0;
	//gotoxy(35, 1); 
	//cout << "S.N.A.K.E";

//	gotoxy(35, 4);
//	cout << "Inställningar";
//	gotoxy(35, 8);
//	cout << "Lätt";
//	gotoxy(35, 11);
//	cout << "Medel";
//	gotoxy(35, 14);
//	cout << "Svår";
//	gotoxy(35, 17);
//	cout << "Avsluta";
//	return 0;
//}
void innanspel1()
{
	fruitX = rand() % width;
	fruitY = rand() % height;

	gotoxy(fruitX, fruitY);
	cout << char(111);
	int score = 0;
	x = width / 2;
	y = height / 2;
}
void runGame()
{
	char gubbe = char(2);		// The head
	int key = 0;			// Stores the keys that is pressed down
	bool gameOn = true;			// Future use to interrupt 
	int score = 0;
	int prevX = tailX[0];
	int prevY = tailY[0];
	int prev2X, prev2Y;
	innanspel1();
	map();
	for (int i = 1; i < nTail; i++)
	{
		prev2X = tailX[i];
		prev2Y = tailY[i];
		tailX[i] = prevX;
		tailY[i] = prevY;
		prevX = prev2X;
		prevY = prev2Y;

	}
	while (key != 27 && gameOn == true)	// 27 == ESC som en int
	{
		// Erase the head
		gotoxy(x, y);
		cout << " ";

		// Check if any button is pushed down
		if (_kbhit())
		{
			key = _getch();
			if (key == 224 || key == 0)
			{
				key = _getch();
			}

			// Changes direction when a key is pushed down
			handleKey(key);
		}

		// Move the snake
		x = x + dX;
		y = y + dY;

		// Print the head
		gotoxy(x, y);
		cout << gubbe;

		score = apple(score);
		if (x == fruitX && y == fruitY)
		{
			score += 10;
			nTail++;
			
		}
		if (x <= 0 || x >= width || y <= 0 || y >= height)
		{
			theENd();
		}

		Sleep(speed);
	}
}
//------------------------------------------------------------------------
void handleKey(int keyPressed)
{
	if (keyPressed == 119 || keyPressed == 87)				// Key: W
	{
		dX = 0;
		dY = -1;
	}
	else if (keyPressed == 115 || keyPressed == 83)			// Key: S
	{
		dX = 0;
		dY = 1;
	}
	else if (keyPressed == 97 || keyPressed == 65)			// Key: A
	{
		dX = -1;
		dY = 0;
	}
	else if (keyPressed == 100 || keyPressed == 68)			// Key: D
	{
		dX = 1;
		dY = 0;
	}
}
//------------------------------------------------------------------------
void map()
{
	int q = 0;
	gotoxy(0, 0);

	while (q <= 78)
	{
		cout << char(45);
		q++;
	}

	q = 0;
	while (q < 24)
	{
		gotoxy(0, q);
		cout << char(124);
		gotoxy(63, q);
		cout << char(124);
		gotoxy(78, q);
		cout << char(124);
		q++;
	}
	cout << endl;
	q = 0;

	while (q <= 78)
	{
		cout << char(45);
		q++;
	}
	q = 0;
	while (q <= 13)
	{
		gotoxy(q+ 64, 5);
			cout << char(45);
			q++;
	}
	gotoxy(66, 7);
	cout << "Play with: " << endl;
	gotoxy(70, 9);
	cout << "W"; 
	gotoxy(68, 11);
	cout << "A";
	gotoxy(70, 11);
	cout << "S";
	gotoxy(72, 11);
	cout << "D";
	gotoxy(66, 1);
	cout << "S N A K E"; 
	

}
int theENd()
{
	system("CLS");
	char again = 0;
	cout << "Game Over" << endl;
	cout << "Play again? (y/n)" << endl;
	while (again != 'y' || again != 'n')
	{
		cin >> again;

	}
	return again;
}
int apple(int score)
{
	if (x == fruitX && y == fruitY)
	{
		fruitX = rand() % width;
		fruitY = rand() % height;

		gotoxy(fruitX, fruitY);
		cout << char(111);
		score = score + 10;
		gotoxy(66, 3);
		cout << "score: " << score;
	}
	return score;
}