toupper

• Version 4.0 and earlier: toupper() function not available.
• Version 5.0 and later: toupper() function available.

Description

The toupper() function returns a copy of a string, converted to all uppercase.

The toupper() function supports both single-byte and multiple-byte character sets. If the character set for the locale does not distinguish uppercase and lowercase characters, the original string is returned unchanged.

Syntax

toupper (string)

Arguments

Return Values

A string that contains an uppercase copy of the argument.

result = toupper (variableName);
result = toupper ("String Constant");