Welcome to jBASE's new documentation site! Many answers to your questions can be found by searching the Knowledgebase or viewing the jBASE Documentation. We also have a Google Group for peer discussion about jBASE. If you are unable to find the information you are looking for, jBASE Support will be glad to assist in resolving your technical problems. Enjoy and please provide comments and feedback .

How can we help you?



The ISUPPER() function will check that the expression consists of entirely upper case characters. The function takes the general form:


Where expression can return a result of any type.  

The function will return TRUE (1) if the expression consists of entirely lower case characters. The function will return FALSE (0) if the expression contains any characters, which are not upper case characters.

International Mode 

When the ISUPPER() function is used in International Mode the properties of each character is determined according to the Unicode Standard. 

Go back to jBASE BASIC.

Was this article helpful?