#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main()
{
    char snake[20][10];
    int i=0, j=0, k=0,l=0,lol=0;
    srand(time(NULL));
    //k=(rand()%20);
    //l=(rand()%10);
    l=0;
    k=0;
    while(l<10)
    {
        while (k<19) //écrit X a la position k
        {
            snake [k][l] = 'X';
            system("cls");
            for (i=0; i<10; i++)
            {
                for (j=0; j<20; j++)
                    printf("%c", snake[j][i]);
            }
            snake [k+1][l] = snake [k][l] ;
            snake [k][l] = NULL;
            k++;
        }
        snake [k][l] = 'X';
        system("cls");
        for (i=0; i<10; i++)
        {
            for (j=0; j<20; j++)
                printf("%c", snake[j][i]);
        }
            k=0;
            l++;
    }
    return 0;
}