koddan anlamadığım hatalar çıkması

beyler ben girhub'dan copy paste bi kod aldım kodu koyup çalıştırmaya başladığım zaman böyle bi hata aldım ne yazdığınıda anlamıyorum düzeltemedimde yardım ederseniz çok sevinirim


kodlar bu:
#include<iostream>
#include<conio.h>
#include<dos.h>
#include <windows.h>
#include <time.h>

#define SCREEN_WIDTH 90
#define SCREEN_HEIGHT 26
#define WIN_WIDTH 70

using namespace std;

HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE);
COORD CursorPosition;

int enemyY[3];
int enemyX[3];
int enemyFlag[3];
char car[4][4] = { ' ','±','±',' ',
'±','±','±','±',
' ','±','±',' ',
'±','±','±','±' };

int carPos = WIN_WIDTH / 2;
int score = 0;

void gotoxy(int x, int y) {
CursorPosition.X = x;
CursorPosition.Y = y;
SetConsoleCursorPosition(console, CursorPosition);
}
void setcursor(bool visible, DWORD size) {
if (size == 0)
size = 20;

CONSOLE_CURSOR_INFO lpCursor;
lpCursor.bVisible = visible;
lpCursor.dwSize = size;
SetConsoleCursorInfo(console, &lpCursor);
}
void drawBorder() {
for (int i = 0; i < SCREEN_HEIGHT; i++) {
for (int j = 0; j < 17; j++) {
gotoxy(0 + j, i); cout << "±";
gotoxy(WIN_WIDTH - j, i); cout << "±";
}
}
for (int i = 0; i < SCREEN_HEIGHT; i++) {
gotoxy(SCREEN_WIDTH, i); cout << "±";
}
}
void genEnemy(int ind) {
enemyX[ind] = 17 + rand() % (33);
}
void drawEnemy(int ind) {
if (enemyFlag[ind] == true) {
gotoxy(enemyX[ind], enemyY[ind]); cout << "****";
gotoxy(enemyX[ind], enemyY[ind] + 1); cout << " ** ";
gotoxy(enemyX[ind], enemyY[ind] + 2); cout << "****";
gotoxy(enemyX[ind], enemyY[ind] + 3); cout << " ** ";
}
}
void eraseEnemy(int ind) {
if (enemyFlag[ind] == true) {
gotoxy(enemyX[ind], enemyY[ind]); cout << " ";
gotoxy(enemyX[ind], enemyY[ind] + 1); cout << " ";
gotoxy(enemyX[ind], enemyY[ind] + 2); cout << " ";
gotoxy(enemyX[ind], enemyY[ind] + 3); cout << " ";
}
}
void resetEnemy(int ind) {
eraseEnemy(ind);
enemyY[ind] = 1;
genEnemy(ind);
}

void drawCar() {
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
gotoxy(j + carPos, i + 22); cout << car[j];
}
}
}
void eraseCar() {
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
gotoxy(j + carPos, i + 22); cout << " ";
}
}
}

int collision() {
if (enemyY[0] + 4 >= 23) {
if (enemyX[0] + 4 - carPos >= 0 && enemyX[0] + 4 - carPos < 9) {
return 1;
}
}
return 0;
}
void gameover() {
system("cls");
cout << endl;
cout << "\t\t--------------------------" << endl;
cout << "\t\t-------- Game Over -------" << endl;
cout << "\t\t--------------------------" << endl << endl;
cout << "\t\tPress any key to go back to menu.";
getch();
}
void updateScore() {
gotoxy(WIN_WIDTH + 7, 5); cout << "Score: " << score << endl;
}

void instructions() {

system("cls");
cout << "Instructions";
cout << "\n----------------";
cout << "\n Avoid Cars by moving left or right. ";
cout << "\n\n Press 'a' to move left";
cout << "\n Press 'd' to move right";
cout << "\n Press 'escape' to exit";
cout << "\n\nPress any key to go back to menu";
getch();
}

void play() {
carPos = -1 + WIN_WIDTH / 2;
score = 0;
enemyFlag[0] = 1;
enemyFlag[1] = 0;
enemyY[0] = enemyY[1] = 1;

system("cls");
drawBorder();
updateScore();
genEnemy(0);
genEnemy(1);

gotoxy(WIN_WIDTH + 7, 2); cout << "Car Game";
gotoxy(WIN_WIDTH + 6, 4); cout << "----------";
gotoxy(WIN_WIDTH + 6, 6); cout << "----------";
gotoxy(WIN_WIDTH + 7, 12); cout << "Control ";
gotoxy(WIN_WIDTH + 7, 13); cout << "-------- ";
gotoxy(WIN_WIDTH + 2, 14); cout << " A Key - Left";
gotoxy(WIN_WIDTH + 2, 15); cout << " D Key - Right";

gotoxy(18, 5); cout << "Press any key to start";
getch();
gotoxy(18, 5); cout << " ";

while (1) {
if (kbhit()) {
char ch = getch();
if (ch == 'a' || ch == 'A') {
if (carPos > 18)
carPos -= 4;
}
if (ch == 'd' || ch == 'D') {
if (carPos < 50)
carPos += 4;
}
if (ch == 27) {
break;
}
}

drawCar();
drawEnemy(0);
drawEnemy(1);
if (collision() == 1) {
gameover();
return;
}
Sleep(50);
eraseCar();
eraseEnemy(0);
eraseEnemy(1);

if (enemyY[0] == 10)
if (enemyFlag[1] == 0)
enemyFlag[1] = 1;

if (enemyFlag[0] == 1)
enemyY[0] += 1;

if (enemyFlag[1] == 1)
enemyY[1] += 1;

if (enemyY[0] > SCREEN_HEIGHT - 4) {
resetEnemy(0);
score++;
updateScore();
}
if (enemyY[1] > SCREEN_HEIGHT - 4) {
resetEnemy(1);
score++;
updateScore();
}
}
}

int main()
{
setcursor(0, 0);
srand((unsigned)time(NULL));

do {
system("cls");
gotoxy(10, 5); cout << " -------------------------- ";
gotoxy(10, 6); cout << " | Car Game | ";
gotoxy(10, 7); cout << " --------------------------";
gotoxy(10, 9); cout << "1. Start Game";
gotoxy(10, 10); cout << "2. Instructions";
gotoxy(10, 11); cout << "3. Quit";
gotoxy(10, 13); cout << "Select option: ";
char op = getche();

if (op == '1') play();
else if (op == '2') instructions();
else if (op == '3') exit(0);

} while (1);

return 0;
}