understanding increment and decrement

Asked Jul 07 '18 at 09:05

Active Jul 07 '18 at 09:12

Viewed 26 times

public class increaments {
      public static void main(String args[]){

            int a,b,c,d; 

            a=1; b=2; c=++b; d=a++; c++;        


            System.out.println(""+a);
            System.out.println(""+b);

            System.out.println(""+c);

            System.out.println(""+d);
      }
}

Result of program:

Actually I can't understand this program as in this program value of a and b is assigned 1&2 resp. But it show 2&3 resp. I don't know why, as I have not incremented it, but it still increased.

Please tell why and these increments and decrements work.

edited Jul 07 '18 at 09:12

u32i64

2,384
3
22
36

asked Jul 07 '18 at 09:05

Rohit Kumar

1

What is mysterious? `++a` and `a++` both increment `a`. – Bohemian Jul 07 '18 at 09:11
I know but both work differently I wanna know why value of a & b changed in this program – Rohit Kumar Jul 07 '18 at 10:13
They both changed because they were both incremented: `c=++b; d=a++;` – Bohemian Jul 07 '18 at 21:56
That's means where ever we use increment and decrement operator they will work for that varible whether they are in equation (c=++b) Right sir? – Rohit Kumar Jul 08 '18 at 07:27
Yes. The increment operators increment the variable and return the new/old value. eg `c = ++b)` is the same as `c = (b = b + 1)` – Bohemian Jul 08 '18 at 16:55
Oh thanks you so much sir Actually doing self study from book I hope I will ask more from you again sir – Rohit Kumar Jul 08 '18 at 23:31

understanding increment and decrement

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