#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <conio.h>
int main()
{
    char tile[10] = {'_'};
    int a, b = 0;

    srand(time(NULL));
    b = 4;

    while (1)
    {
        a = rand() % 2;
        if (a == 0)
        {
            b -= 1;
            if (b < 0)
            {
                break;
            }
        }
        else
        {
            b += 1;
            if (b > 9)
            {
                printf("_ _ _ _ _ _ _ _ _ _ \n");
                break;
            }
        }
        for (int i = 0; i < 10; i++)
        {
            tile[i] = '_';
        }
        tile[b] = '*';
        for (int j = 0; j < 10; j++)
        {
            printf("%c ", tile[j]);
        }
        printf("\n");
        _getch();
    }
    return 0;
}