ISUPPER( )
Returns true if the first character of a string is alphabetic and uppercase.
Syntax
ISUPPER(<expC>)
<expC>
The string you want to test.
Description
ISUPPER( ) tests the first character of the string and returns true if it’s an uppercase alphabetic character. ISUPPER( ) returns false if the character isn’t uppercase or if the character expression is empty.
The current language driver defines the character values that are lowercase and uppercase alphabetic. In a U.S. language driver, a lowercase alphabetic character is from a to z, and an uppercase alphabetic character is from A to Z.
Other than the syntactic difference of being a method instead of a function, the isUpper( ) method behaves identically to the ISUPER( ) function.