how to replace each first letter of a word into capital letter :

[zcabeli]

Hi all, i'm currently struggling to perform the above mentioned replacement.

i already know how to catch the first letter in each word and determined if it's regular or capital.

however, i don't know how to replace this letter with it's corresponding capital letter.

perhaps there is an option to change the ascii value of the a character in perl regexp ?

for example :

Hello hello word --> Hello Hello World

many thanks for your help.

[RichKersh]

my $t="hello hello word";
$t=~s/(\b)(\w)/$1\u$2/g;
print $t;

[zcabeli]

hey, thanks for the help ! i really appreciate it.
can you explain what does the '\u' symbol means, i haven't found it in any perl documentation

[RichKersh]

perldoc perlre

...
\u uppercase next char (think vi)
...

[zcabeli]

thanks again, i found all i need (and much more) in perlre