class PreAndPostIncrementDemo {
    public static void main(String[] args){
        int i = 3;
        i++;
        // prints 4
        System.out.println(i);
        ++i;			   
        // prints 5
        System.out.println(i);
        // prints 6, i=6
        System.out.println(++i);
        // prints 6, i=7
        System.out.println(i++);
        // prints 7
        System.out.println(i);
        // prints 7, i=6
        System.out.println(i--);
        // prints 5, i=5
        System.out.println(--i);
    }
}