void selection_sort (int *a, int n) {
    int i, j, m, t;
    for (i = 0; i < n; i++) {
        for (j = i, m = i; j < n; j++) {
            if (a[j] < a[m]) {
                m = j;
            }
        }
        t = a[i];
        a[i] = a[m];
        a[m] = t;
    }
}

int main () {
    int a[] = {4, 65, 2, -31, 0, 99, 2, 83, 782, 1};
    int n = sizeof a / sizeof a[0];
    int i;
    for (i = 0; i < n; i++)
        printf(, a[i], i == n - 1 ?  : );
    selection_sort(a, n);
    for (i = 0; i < n; i++)
        printf(, a[i], i == n - 1 ?  : );
    return 0;
}