Problems with random numbers (C)

Here is my code.

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

int main()
{
    int i;
    int j;
    int x;
    int y[100];
    int b0 = 0, A0[100];

    srand(time(NULL));

    for (x = 0; x < 100; x ++)
    {
        y[x] = (rand()% 1000)+ 1;
    }
    int ans;

    for (x = 0; x < 100; x ++)
    {
        ans = y[x] % 10;

        if(x == 0)
        {
            printf("Frist group(Last for'0')\n");
        }
        if (ans == 0)
        {
            A0[b0] = y[x];
            b0++;
        }
    }

    for (int count0 = 0; count0 <= b0; count0 ++)
    {
        printf(" %d  ", A0[count0]);
    }
    printf("\n\n");

    system("pause");
    return (0);
}

here is my output.

Frist group(Last for'0')
 32766   1000   840   630   900   500   830   520   80   470   510   760

I don't know why when I run this program every time, the frist number is always a strange integer.

Can any one please help me, I want to know what is casuing this problem.

Thankyou very much.