java 自增运算

//pre increment
public class Sample {

    public static void main(String[] args) {int a, b, c, d, e;
        Scanner s = new Scanner(System.in);
        System.out.print("Enter any integer a:");
        a = s.nextInt();
        b = ++a;
        System.out.println("Result after Pre Increment a:"+a);
        System.out.println("Result after Pre Increment b:"+b);
        c = a++;
        System.out.println("Result after Pre Increment a:"+a);
        System.out.println("Result after Post Increment c:"+c);
        d = --a;
        System.out.println("Result after Pre Increment a:"+a);
        System.out.println("Result after Pre Decrement d:"+d);
        e = a--;
        System.out.println("Result after Pre Increment a:"+a);
        System.out.println("Result after Post Decrement e:"+e);
    }
}



OUTPUT:
Enter any integer a:12
Result after Pre Increment a:13
Result after Pre Increment b:13
Result after Pre Increment a:14
Result after Post Increment c:13
Result after Pre Increment a:13
Result after Pre Decrement d:13
Result after Pre Increment a:12
Result after Post Decrement e:13