perl function ucfirst

The ucfirst function in Perl is used to convert the first character of a string to uppercase. It takes a single argument which is the string to be modified, and returns a new string with the first character converted to uppercase.

Here's an example:

my $str = "the quick brown fox jumps over the lazy dog";
my $new_str = ucfirst($str);
print "$new_str\n";

Output:

The quick brown fox jumps over the lazy dog

In the example above, we first define a string $str with all lowercase characters. We then call the ucfirst function on this string, which returns a new string with the first character ("t") converted to uppercase ("T"). We store the result in a new variable $new_str, and then print the modified string to the console.