ALPHA
Determines if a string is alphabetic or not.
Synopsis
ALPHA(string)
Arguments
string | An expression that resolves to a string. |
Description
If string consists entirely of alphabetic characters, ALPHA returns 1. Otherwise, ALPHA returns 0. Note that blank spaces are non-alphabetic characters. Dynamic array separator characters are considered to be alphabetic characters. On a Unicode system ALPHA recognizes Unicode letters as alphabetic characters.
Examples
The following example uses the ALPHA function to determine if a string consists of only alphabetic characters:
PRINT ALPHA("abcdefg"); ! Returns 1 PRINT ALPHA("AbCdEfG"); ! Returns 1 PRINT ALPHA("my string"); ! Returns 0 (space not allowed) PRINT ALPHA("half-wit"); ! Returns 0 (hyphen not allowed) PRINT ALPHA(""); ! Returns 0 PRINT ALPHA(123); ! Returns 0
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See Also
NUM function