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

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Posted in: C Language