snake game s.o.s

soka2oo7 (10)
i'm trying to make a snake game & i can't make the lenght of the snake increase & it's score & the fruit appears one time only & i have to press on the arrow all the time please help me in this code today please. 
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//start food function
void food()
{
     int difrencex = 10 - 630;
     int difrencey = 30 - 470;
     int salma = 0;
     int foodx;
     int foody;
     time_t t;
     srand((unsigned) time(&t));
     for(int i=0;i<salma;i++)
     rand();
     foodx = (rand() % difrencex);
     foody = (rand() % difrencey); 
     for(int i=0; 630>foodx>10 && 470>foody>30;i++) 
     {
     foodx = (rand() % difrencex);
     foody = (rand() % difrencey);    
     }       
     putpixel(foodx,foody,15);
     salma++; 
     static int foodcount = 0;
     score = 0;
     int nextx;
     int nexty;
     nextx = snake.head_x;
     nexty = snake.head_y;
     if(snake.head_dir == RIGHT)
     {
                       nextx++;
     }
     if(snake.head_dir == LEFT)
     {
                       nextx--;
     }
     if(snake.head_dir == UP)
     {
                       nexty--;
     }
     if(snake.head_dir == DOWN)
     {
                       nexty++;
     }
     int nextpixel;
     nextpixel = getpixel(nextx,nexty);
     if(nextpixel==15) 
     {
                  
     if (snake.tail_dir == UP)
           {
             for ( int i = 0; i<101;i++) 
             putpixel (snake.tail_x,snake.tail_y+i,15); 
             snake.tail_y +=100;
           }
        if (snake.tail_dir == DOWN)
          {
            for (int i = 0; i<101;i++) 
            putpixel (snake.tail_x,snake.tail_y-i,15); 
            snake.tail_y -=100;
          } 
        if (snake.tail_dir == LEFT)
          {
            for (int i = 0; i<101;i++)
            putpixel (snake.tail_x+i,snake.tail_y,15); 
            snake.tail_x +=100;
            //printf ("LEFT");
          }
        if (snake.tail_dir == RIGHT)
          {
             for ( int i = 0; i<101;i++)
             putpixel (snake.tail_x-i,snake.tail_y,15); 
             snake.tail_x -=100;
             //printf ("RIGHT");
          } 
   

                  foodcount--;
                  score+=10;
                  settextstyle(3,0,2);
                  sprintf(scorestring,"score : %d ",score);
                  outtextxy(1,0,scorestring);
     }
}

//start function bouns
/*void bouns()
{
     int difrencex = 620 - 20;
     int difrencey = 460 - 40;
     int salma = 0;
     int bounsx;
     int bounsy;
     time_t t;
     srand((unsigned) time(&t));
     for(int i=0;i<salma;i++)
     rand();
     bounsx = (rand() % difrencex);
     bounsy = (rand() % difrencey);
     int j = 20;
     setcolor(LIGHTBLUE);
     circle(bounsx+j,bounsy+j,1);
     salma++;
}*/

//Game Over
void GameOver()
{
     if(snake.head_x <= 10 || snake.head_x >= 630 || snake.head_y <= 30 || snake.head_y >= 470)
     {
                     settextstyle(3,0,2);
                     outtextxy(290,220,"Game Over");
                     delay(3000);
                     exit(1);
     }
     int nextx;
     int nexty;
     nextx = snake.head_x;
     nexty = snake.head_y;
     if(snake.head_dir == RIGHT)
     {
                       nextx++;
     }
     if(snake.head_dir == LEFT)
     {
                       nextx--;
     }
     if(snake.head_dir == UP)
     {
                       nexty--;
     }
     if(snake.head_dir == DOWN)
     {
                       nexty++;
     }
     int nextpixel;
     nextpixel = getpixel(nextx,nexty);
     if(nextpixel == LIGHTGREEN)
     {
                 settextstyle(3,0,2);
                 outtextxy(290,220,"Game Over");
                 delay(3000);
                 exit(1);
     }
}

//start function Game
void Game()
{
     food();
     //bouns();
     while(1)
     {
             move();
             GameOver();
     }
}
Zaita (2770)
We need the code for your move() function. This is the function that is being called repeatedly so has your game logic in it.
soka2oo7 (10)
here is the function
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#include<graphics.h>
#include<conio.h>
#include<math.h>
#include<time.h>
#include<stdlib.h>
#include<dos.h>
#include <cstdlib>
#include <iostream>
#include <cstdio>
#include <windows.h> 
#include <fstream>
#include <string>
using namespace std;

#define LEFT 1
#define RIGHT 2
#define UP 3
#define DOWN 4

void wait ( int seconds )
{
  clock_t endwait;
  endwait = clock () + seconds * CLOCKS_PER_SEC ;
  while (clock() < endwait) {}
}


class snake
{
      public:
             int length;
             int newheadx,newheady;
             int head_x;
             int head_y;
             int head_dir;
             int tail_x;
             int tail_y;
             int tail_dir;
             int bend_x[1000];
             int bend_y[1000];
             int bend_dir[1000];
             void GameDate();
};
snake snake;

int score;
char scorestring[100];

//screen function
void screen()
{
     score = 0;
     setcolor(LIGHTRED);
     line(10,30,10,470);
     line(10,30,630,30);
     line(630,30,630,470);
     line(10,470,630,470);
     settextstyle(3,0,2);
     char Theta2[]=" High score : ";
     sprintf(scorestring,"score : %d",score);
     outtextxy(1,0,scorestring);
     outtextxy(300,0,Theta2);
}

//start function game Date
void GameDate()
{
     snake.length = 50;
     snake.head_x = 320;
     snake.head_y = 240;
     snake.head_dir = RIGHT;
     snake.tail_x = snake.head_x - snake.length;
     snake.tail_y = snake.head_y;
     snake.tail_dir = snake.head_dir;
     setcolor(LIGHTGREEN);
     line(snake.tail_x,snake.tail_y,snake.head_x,snake.head_y);
}

//start funcyion movement
void move()
{
     static int i = 0;
     static int j = 0;
     if(i > 100)
        i = 0;
     if(j > 100)
        j = 0;
     char arrow;
     if(kbhit)
     {
              arrow = getch();
              if(arrow == 77)
                 arrow = RIGHT;
              if(arrow == 75)
                 arrow = LEFT;
              if(arrow == 72)
                 arrow = UP;
              if(arrow == 80)
                 arrow = DOWN;
              if(arrow == RIGHT && snake.head_dir != LEFT && snake.head_dir != RIGHT)
              {
                       snake.head_dir = RIGHT;
                     snake.newheadx= snake.bend_x[i] = snake.head_x;
                      snake.newheady= snake.bend_y[i] = snake.head_y;
                       snake.bend_dir[i] = RIGHT;
                       i++;
              }
              if(arrow == LEFT && snake.head_dir != RIGHT && snake.head_dir != LEFT)
              {
                       snake.head_dir = LEFT;
                       snake.newheadx=snake.bend_x[i] = snake.head_x;
                      snake.newheady=snake.bend_y[i] = snake.head_y;
                       snake.bend_dir[i] = LEFT;
                       i++;
              }
              if(arrow == UP && snake.head_dir != DOWN && snake.head_dir != UP)
              {
                       snake.head_dir = UP;
                      snake.newheadx= snake.bend_x[i] = snake.head_x;
                      snake.newheady= snake.bend_y[i] = snake.head_y;
                       snake.bend_dir[i] = UP;
                       i++;
              }
              if(arrow == DOWN && snake.head_dir != UP && snake.head_dir != DOWN)
              {
                       snake.head_dir = DOWN;
                       snake.newheadx =  snake.bend_x[i] = snake.head_x;
                       snake.newheady = snake.bend_y[i] = snake.head_y;
                       snake.bend_dir[i] = DOWN;
                       i++;
              }                  
              if(snake.tail_x == snake.bend_x[j] && snake.tail_y == snake.bend_y[j])
              {
                              snake.tail_dir = snake.bend_dir[j];
                              j++;
              }
     }      
     if(snake.head_dir == LEFT)
     {
                       
                     snake.newheadx = snake.head_x--;
     }
     if(snake.head_dir == RIGHT)
     {
                      snake.newheadx= snake.head_x++;
     }
     if(snake.head_dir == DOWN)
     {
                     snake.newheady =  snake.head_y++;
     }
     if(snake.head_dir == UP)
     {
                       snake.newheady = snake.head_y--;
     }
     putpixel(snake.head_x,snake.head_y,LIGHTGREEN);
     putpixel(snake.tail_x,snake.tail_y,0);
     delay(50);
     if(snake.tail_dir == LEFT)
     {
                       snake.tail_x--;
     }
     if(snake.tail_dir == RIGHT)
     {
                       snake.tail_x++;
     }
     if(snake.tail_dir == DOWN)
     {
                       snake.tail_y++;
     }
     if(snake.tail_dir == UP)
     {
                       snake.tail_y--;
     }
}

     int foodx;
     int foody;
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