Increment (++) and Decrement (--) Operators


//prefix syntax ++variable --variable //postfix syntax variable++ variable--

variable: Any numeric variable.

The increment and decrement operators are used as a shortcut to modify the value stored in a variable and access that value. Either operator may be used in a prefix or postfix syntax.

If	Equivalent Action	Return value
++variable	variable += 1	value of variable after incrementing
variable++	variable += 1	value of variable before incrementing
--variable	variable -= 1	value of variable after decrementing
variable--	variable -= 1	value of variable before decrementing

The following example illustrates the difference between prefix and postfix syntax for the ++ operator.

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// Example of prefix increment operator var j1 : int = 2; var k1 : int; k1 = ++j1; // k1 is 3, the value of j1 after incrementing // Example of postfix increment operator var j2 : int = 2; var k2 : int; k2 = j2++; // k2 is 2, the value of j2 before incrementing

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// Example of prefix increment operator
var j1 : int = 2;
var k1 : int;
k1 = ++j1;          // k1 is 3, the value of j1 after incrementing

// Example of postfix increment operator
var j2 : int = 2;
var k2 : int;
k2 = j2++;          // k2 is 2, the value of j2 before incrementing

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Concepts

Operator Precedence
Operator Summary

Arguments

Remarks

Example

Requirements

See Also

Concepts