isupper()

Description:

Check if a string is composed of upper case letters.

Syntax:

isupper(string)

Note:

The function checks if the string string is composed of upper case letters. If string is an integer, look it up in the ASCII table to see if the correponding characters are in upper case.

Parameters:

String

String expression/numeric expression

Return value:

Boolean value

Example:

isupper("ADSFDGKJ")

true

isupper(85)

true

isupper("SDsdsSDAS")

false

isupper("8ASDS7")

false

Related functions:

islower()