C Increment Operators

We can use increment operator to increase or decrease the value of variable. C increment operators support in both prefix and postfix form. Here are syntax of of increment operators:

1.variable++;

2.variable--;

3.++variable;

4.--variable;

Here is the demonstration program:

01.#include <stdio.h>

02./* a program demonstrates C increment operators */

03.void main(){

04.int x = 10;

05.int y = 0;

06.printf("x = %d\n",x);

07. 

08./* demonstrate ++  prefix operator */

09.y = ++x;

10.printf("y = ++x;y = %d\n",y);

11. 

12./* demonstrate ++  postfix operator */

13.y = x++;

14.printf("y = x++;y = %d\n",y);

15. 

16./* demonstrate --  prefix operator */

17.y = --x;

18.printf("y = --x;y = %d\n",y);

19. 

20./* demonstrate --  postfix operator */

21.y = x--;

22.printf("y = x--;y = %d\n",y);

23. 

24./* keep console screen until a key stroke */

25.char key;

26.scanf(&key);

27.}

And the output is:

x = 10
y = ++x;y = 11
y = x++;y = 11
y = --x;y = 11
y = x--;y = 11

source:cprogramlanguage.net