C$TOUPPER
The C$TOUPPER library routine converts a data item's content to upper-case.
Syntax:
 CALL "C$TOUPPER" USING textItem 
                       [textLen]
Parameters:
textItem
any alphanumeric data item
Specifies the text to be converted.
textLen
any numeric data item or numeric literal
Specifies the number of characters to be converted. Conversion occurs from left to right and only the first textLen characters are converted. If this parameter is omitted the whole string is translated.
Examples:
Example - Change case to uppercase for a string
*> define str1 as pic x(n)
 
move "Hello COBOL World" to str1
call "c$toupper" using str1
*> new value for str1 will be: HELLO COBOL WORLD