下面程序结果为：(     )

class Test4 {
    public static void main(String[] args) {
        boolean x = true;
        boolean y = false;
        short z = 42;
        if ((z++ == 42) && (y = true)) z++;
        if ((x = false) || (++z == 45)) z++;
        System.out.println("z=" + z);
    }
}