java ++和--

public class Sample {

    public static void main(String[] args) {
        int num1 = 10, num2 = 20;
        int num3 = 5, num4 = 7;
        System.out.println(num1++);
        System.out.println(num1++);
        System.out.println(num1);
        System.out.println(++num2);
        System.out.println(num2);
        System.out.println(num3--);
        System.out.println(num3);
        System.out.println(--num4);
        System.out.println(num4);
    }
}



OUTPUT:
10
11
12
21
21
5
4
6
6