Convert input to lowercase and uppercase

    

while (<>) {
    print "Here's what you typed lowercased: " . lc . "\n";
    print "Here's what you typed uppercased: " . uc . "\n";
}

1.	Convert all letters of $string to lowercase
2.	Convert all letters of $string1 to uppercase
3.	Lower and upper case
4.	Output the initial in lowercase and uppercase
5.	Convert mixed-case input

Convert input to lowercase and uppercase : Case « String « Perl