#include <stdio.h>

int main()
{
    int v[] = {56, 4, 23, 0, 1, 58, 56, 0, 2};
    int i, j;
    for (i=0; i<9; i++)
    {
        if (v[i] == 0)
        {
            for (j=i; j<8; j++)
                v[j] = v[j+1];
            v[8] = 0;
        }
    }
    for (i=0; i<9; i++)
        printf("%d ", v[i]);
}