Decrement

The decrement operator is a special case of [[subtraction]], and subtracts the a number from a [[variable]]. This cannot be used on literals or constants. This operator is a single instruction by itself and can only affect one variable at a time. 

== [[FDS]] ==
*{{codeblock|{{tag|variable|number}}{{tag|whitespace}}{{Code|operator|got one less}}{{tag|punctuation}}}}
*{{codeblock|{{Code/experimental|operator|There was one less}}{{tag|whitespace}}{{tag|variable|number}}{{tag|punctuation}}}}

*{{codeblock|{{code|keyword|I would}}{{tag|whitespace}}{{Code/experimental|operator|subtract}}{{tag|whitespace}}{{tag|value|number}}{{tag|whitespace}}{{code/experimental|operator|from}}{{tag|whitespace}}{{tag|variable|number}}{{tag|punctuation}}}}

== Example ==
{{codeblock|{{Code|variable|Spike}}{{Code|whitespace| }}{{Code|operator|got one less}}{{Code|punctuation|.}}{{code|whitespace|<BR
/>}}{{Code/experimental|operator|There was one less}}{{Code|whitespace| }}{{Code|variable|cider}}{{Code|punctuation|.}}{{code|whitespace|<BR
/>}}{{code|keyword|I would}}{{code|whitespace| }}{{code/experimental|operator|subtract}}{{code|whitespace| }}{{code|variable|Spike}}{{code|whitespace| }}{{code/experimental|operator|from}}{{code|whitespace| }}{{code|variable|cider}}{{code|punctuation|.}}}}

This subtracts {{Code|literal|1}} from the variable {{Code|variable|Spike}} and then from {{code|variable|cider}}, and then subtracts {{code|variable|Spike}} from {{code|variable|cider}}.

Its Java equivalent is as follows:
{{codeblock|<SOURCE LANG=java>Spike--;
cider--;
cider -= Spike;</SOURCE>}}

== See Also ==
* [[Subtract]]
* [[Increment]]

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