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Increment Decrement

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The increment and decrement operators exist in prefix and postfix form. 

int a = 1;
int b = 1;
int tmp = 0;

tmp = ++a;        /* increments a by one, and returns new value; a == 2, tmp == 2  */
tmp = a++;        /* increments a by one, but returns old value; a == 3, tmp == 2 */
tmp = --b;        /* decrements b by one, and returns new value; b == 0, tmp == 0 */
tmp = b--;        /* decrements b by one, but returns old value; b == -1, tmp == 0 */

Note that arithmetic operations do not introduce sequence points, so certain expressions with ++ or -- operators may introduce undefined behaviour.

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Operators:
* Operators
* Relational Operators
* Conditional OperatorTernary Operator
* Bitwise Operators
* Comma Operator
* Arithmetic Operators
* Access Operators
* Short circuit behavior of logical operators
* sizeof Operator
* Increment Decrement
* Function Call Operator
* Cast Operator
* Pointer Arithmetic
* Logical Operators
* Assignment Operators
* Alignof
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