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#include <bits/stdc++.h> #include <conio.h> #include <windows.h>

using namespace std;

bool gameover; const int width = 20; const int height = 20; int x, y; int fruitX, fruitY; int score; int tailX[100], tailY[100]; int nTail; enum eDirection { STOP = 0, LEFT, RIGHT, UP, DOWN }; eDirection dir;

void Setup() { gameover = false; dir = STOP; x = width / 2; y = height / 2; fruitX = rand() % width; fruitY = rand() % height; score = 0; }

void Draw() { system("cls");

for (int i = 0; i < width+2; i++)
    cout << "#";
cout << endl;

for (int i = 0; i < height; i++)
{
    for (int j = 0; j < width; j++)
    {
        if (j == 0)
            cout << "#";
        if (i == y && j == x)
            cout << "O";
        else if (i == fruitY && j == fruitX)
            cout << "F";
        else
        {
            bool printTail = false;
            for (int k = 0; k < nTail; k++)
            {
                if (tailX[k] == j && tailY[k] == i)
                {
                    cout << "o";
                    printTail = true;
                }
            }
            if (!printTail)
                cout << " ";
        }

        if (j == width - 1)
            cout << "#";
    }
    cout << endl;
}

for (int i = 0; i < width+2; i++)
    cout << "#";
cout << endl;

cout << "Score:" << score << endl;

}

void Input() { if (_kbhit()) { switch (_getch()) { case 'a': dir = LEFT; break; case 'd': dir = RIGHT; break; case 'w': dir = UP; break; case 's': dir = DOWN; break; case 'x': gameover = true; break; } } }

void Logic() { int prevX = tailX[0]; int prevY = tailY[0]; int prev2X, prev2Y; tailX[0] = x; tailY[0] = y; for (int i = 1; i < nTail; i++) { prev2X = tailX[i]; prev2Y = tailY[i]; tailX[i] = prevX; tailY[i] = prevY; prevX = prev2X; prevY = prev2Y; }

switch (dir)
{
case LEFT:
    x--;
    break;
case RIGHT:
    x++;
    break;
case UP:
    y--;
    break;
case DOWN:
    y++;
    break;
default:
    break;
}

if (x >= width)  
    x = 0;
else if (x < 0)
    x = width - 1;
if (y >= height)
    y = 0;
else if (y < 0)
    y = height - 1;

for (int i = 0; i < nTail; i++)  
{
    if (tailX[i] == x && tailY[i] == y)
        gameover = true;
}

if (x == fruitX && y == fruitY) 
{
    score += 10;
    fruitX = rand() % width;
    fruitY = rand() % height;
    nTail++;
}

}

int main() { Setup(); while (!gameover) { Draw(); Input(); Logic(); Sleep(100); } return 0; }