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dec   statement



Syntax:
dec(intVar)
numericVariable --
numericVariable -= valueToSubtract


Description:
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, FutureBasic supports the use of -= to decrease the value of a variable by a specified amount.

Example:
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


Note:
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 Also:
inc; dec long/word/byte