Return upper-case version of a string

Daftar Isi

• uc EXPR

• uc

  Returns an uppercased version of EXPR. This is the internal functionimplementing the \U escape in double-quoted strings.It does not attempt to do titlecase mapping on initial letters. Seeucfirst for that.

  If EXPR is omitted, uses $_.

  This function behaves the same way under various pragma, such as in a locale,as lc does.