Futurebasic/Language/Reference/dec
DEC statementEdit
DECEdit
StatementEdit
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SyntaxEdit
DEC(intVar)
numericVariable --
numericVariable -= valueToSubtract
RevisedEdit
May 30, 2000 (Release 3)
DescriptionEdit
This statement decrements intVar
by 1 (or by valueToSubtract
); that is, it subtracts 1 from the value of intVar
, and stores the value back into intVar
. intVar
must be a (signed or unsigned) byte variable, short-integer variable or long-integer variable. If intVar
is already at the minimum value for its variable type, then DEC(intVar)
will cycle it back to its maximum value. As of Release 3, FB supports the use of -= to decrease the value of a variable by a specified amount.
ExampleEdit
DEC(x&)
and...
x& -= 1
and...
x& --
...are all equivalent to:
x& = x& - 1
The following expressions are also equivalent:
x& = x& - 100
x& -= 100
NoteEdit
The -=
syntax may not be used for arrays of strings, containers, or records where arrays are involved, only numeric values may take advantage of this syntax.
See AlsoEdit
INC; DEC LONG/WORD/BYTE; DEF CYCLE