void stepen(int* cv, int* cv2,int* y) {
int u = 0, k = 0, j = 0, i = 0,cr=0,v=0,t=0;

    cr = 0;
    for (i = 1; i <= cv[0]; i++) {

        for (j = 1; j <= cv2[0]; j++) {
            cr = cv[i] * cv2[j];
            k = i + j - 1;
            while (cr > 0) {
                cr = cr + y[k];
                y[k] = cr % 10;
                cr = cr / 10;
                if (k > y[0]) y[0] = k;
                k = k + 1;
            }

        }

        }
    }

case'^': {
    int n = 0;
    int cv[N+5];
    int cv2[N+5];

    printf("Enter the first number ");
    readlong(a);
    printf("nEnter the stepen ");
    scanf_s("%d", &n);
    for (i = 0; i < N+5; i++) {
        cv[i] = a[i];
        cv2[i] = a[i];
    }
    for (t = 0; t < n-1; t++) {
        stepen(cv, cv2, y);
        for (zxc = 0; zxc < N + 5; zxc++) {
            cv2[zxc] = 0;
            cv2[zxc] = y[zxc];
        }
    }
        writelong(y);

    break;
}