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qb64/internal/help/UCASE$.md

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The [UCASE$](UCASE$) function returns an all-uppercase version of a [STRING](STRING).
## Syntax
> result$ = [UCASE$](UCASE$)(text$)
## Description
* Used to guarantee that all alphabetical characters in a [STRING](STRING) are capitalized.
* Does not affect non-alphabetical characters.
## Example(s)
The following code guarantees that all letter key entries are capitalized:
```vb
PRINT "Do you want to continue? (y/n)"
DO
K$ = UCASE$(INKEY$)
LOOP UNTIL K$ = "Y" OR K$ = "N"
```
## See Also
* [LCASE$](LCASE$) (lower case)
* [INKEY$](INKEY$)
* [INPUT$](INPUT$)