Increment and Decrement Operators - C Operator

C examples for Operator:Increment Decrement Operator

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Introduction

To increment or decrement a variable by one, use the increment (++) and decrement (--) operators. 

x++; /* x = x+1; */
x--; /* x = x-1; */

Both of these can be used either before or after a variable. 

x++; /* post-increment */
x--; /* post-decrement */
++x; /* pre-increment */
--x; /* pre-decrement */

The post-operator returns the original value before it changes the variable.

The pre-operator changes the variable first and then returns the value.

Demo Code

#include <stdio.h>
int main(void) {
    int x, y;//w w w . j  a  v a  2 s. c  o  m
    x = 5; y = x++; /* y=5, x=6 */
    x = 5; y = ++x; /* y=6, x=6 */
}

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