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Merging two of c++ games into 1

zephile (17)
Our prof gave us two game program one is Snake and the other is Dinosaur. he required us to merge two games in a single program just like a game library but with only two games.

I have absolutely no idea on how will I ever get past this


dino game:
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  #include <stdio.h>
#include <conio.h>
#include <iostream>
#include <time.h>
#include <windows.h>
void gotoxy(int x, int y)
{
 COORD coord;
 coord.X = x;
 coord.Y = y;
 SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
} 
void delay(unsigned int mseconds)
{
    clock_t goal = mseconds + clock();
    while (goal > clock());
}
void getup()
{
    system("cls");
    gotoxy(10,2);
    printf("Press X to Exit, Press Space to Jump");
    gotoxy(62,2);
    printf("SCORE : ");
    gotoxy(1,25);
    for(int x=0;x<79;x++)
    printf("ß");
}
 
int t,speed=40;
void ds(int jump=0)
{
    static int a=1;
 
    if(jump==0)
        t=0;
    else if(jump==2)
        t--;
    else t++;
    gotoxy(2,15-t);
    printf("                 ");
    gotoxy(2,16-t);
    printf("         ÜÛßÛÛÛÛÜ");
    gotoxy(2,17-t);
    printf("         ÛÛÛÛÛÛÛÛ");
    gotoxy(2,18-t);
    printf("         ÛÛÛÛÛßßß");
    gotoxy(2,19-t);
    printf(" Û      ÜÛÛÛÛßßß ");
    gotoxy(2,20-t);
    printf(" ÛÛÜ  ÜÛÛÛÛÛÛÜÜÜ ");
    gotoxy(2,21-t);
    printf(" ßÛÛÛÛÛÛÛÛÛÛÛ  ß ");
    gotoxy(2,22-t);
    printf("   ßÛÛÛÛÛÛÛß     ");
    gotoxy(2,23-t);
    if(jump==1 || jump==2){
    printf("    ÛÛß ßÛ       ");
    gotoxy(2,24-t);
    printf("    ÛÜ   ÛÜ      ");
    }else if(a==1)
    {
    printf("    ßÛÛß  ßßß    ");
    gotoxy(2,24-t);
    printf("      ÛÜ         ");
    a=2;
    }
    else if(a==2)
    {
    printf("     ßÛÜ ßÛ      ");
    gotoxy(2,24-t);
    printf("          ÛÜ     ");
    a=1;
    }
    gotoxy(2,25-t);
    if(jump!=0){
        printf("                ");
    }
    else
    {
         
        printf("ßßßßßßßßßßßßßßßßß");
    }
    delay(speed);
}
void obj()
{
    static int x=0,scr=0;
    if(x==56 && t<4)
    {
    scr=0;
    speed=40;
    gotoxy(36,8);
    printf("Game Over");
    getch();
    gotoxy(36,8);
    printf("         ");
    }
    gotoxy(74-x,20);
    printf("Û    Û ");
    gotoxy(74-x,21);
    printf("Û    Û ");
    gotoxy(74-x,22);
    printf("ÛÜÜÜÜÛ ");
    gotoxy(74-x,23);
    printf("  Û    ");
    gotoxy(74-x,24);
    printf("  Û  " );
    x++;
    if(x==73)
    {
    x=0;
    scr++;
    gotoxy(70,2);
    printf("     ");
    gotoxy(70,2);
    printf("%d",scr);
    if(speed>20)
        speed--;
    }
}
int main()
{
    system("mode con: lines=29 cols=82");
    char ch;
    int i;
    getup();
    while(true)
    {
        while(!kbhit())
        {
            ds();
            obj();
        }
        ch=getch();
        if(ch==' ')
        {
            for(i=0;i<10;i++)
            {
            ds(1);
            obj();
            }
            for(i=0;i<10;i++)
            {
            ds(2);
            obj();
            }
        }
        else if (ch=='x')
            return(0);
    } 
     
}




Snake
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#include <iostream>
#include <conio.h>
#include <windows.h>
#include <time.h> 
using namespace std;
bool gameOver;
const int width = 20;
const int height = 20;
int x, y, fruitX, fruitY, score;
int tailX[100], tailY[100];
int nTail;
enum eDirecton { STOP = 0, LEFT, RIGHT, UP, DOWN};
eDirecton 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 print = false;
                for (int k = 0; k < nTail; k++)
                {
                    if (tailX[k] == j && tailY[k] == i)
                    {
                        cout << "o";
                        print = true;
                    }
                }
                if (!print)
                    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;
            default:
                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 || y > height || y < 0)
      gameOver = true;

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

    if (x == fruitX && y == fruitY)
    {
        srand(time(0)); 
        score += 10;
        fruitX = rand() % width;
        fruitY = rand() % height;
        nTail++;
    }
}
int main()
{
    Setup();
    while (!gameOver)
    {
        Draw();
        Input();
        Logic();
        Sleep(50); //sleep(10);
    }
    return 0;
}


any help would be appreciated
salem c (3700)
Sure, you rename the two main functions to be playSnake() and playDinosaur() respectively.

Then you create a whole new main with
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int main ( ) {
    cout << "Which?";
    cin >> choice;
    if ....
        playSnake();
    else
        playDinosaur();
}
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