Can't find right printf format

[Hubert Gabler]

Hello,
my problem is very simple, but I cannot find the answer in "Learning
Perl" nor in the manpages:
Which FORMAT in printf makes the numbers 1,2,3,.. look like 001,002,003..?
Hubert

 

[Steven M. O'Neill]

Hello,
my problem is very simple, but I cannot find the answer in "Learning
Perl" nor in the manpages:
Which FORMAT in printf makes the numbers 1,2,3,.. look like 001,002,003..?
Hubert

The magic word is "padding".

http://www.google.com/search?q=printf+padding

 

[Ben Morrow]

Hello,
my problem is very simple, but I cannot find the answer in "Learning
Perl" nor in the manpages:
Which FORMAT in printf makes the numbers 1,2,3,.. look like 001,002,003..?
Hubert

perldoc -f printf says 'printf FILEHANDLE FORMAT, LIST' is equivalent to
'print FILEHANDLE sprintf FORMAT, LIST' (with a caveat), so you need to
look in perldoc -f sprintf. This contains a full list of the conversion
specifiers supported by Perl.

Ben

 

[Uri Guttman]

HG> my problem is very simple, but I cannot find the answer in
HG> "Learning Perl" nor in the manpages: Which FORMAT in printf makes
HG> the numbers 1,2,3,.. look like 001,002,003..? Hubert

FAQ

perldoc -q pad

uri

 

[Hubert Gabler]

...you need to look in perldoc -f sprintf.

Thanks to all who gave me this hint. I simply overlooked the link from
printf to sprintf. I promise to read the manpages more careful in the
future before asking the experts!
Kind regards,
Hubert

 

[szr]

Hello,
my problem is very simple, but I cannot find the answer in "Learning
Perl" nor in the manpages:
Which FORMAT in printf makes the numbers 1,2,3,.. look like
001,002,003..? Hubert

%03d

This will give you 3 zero-padding digits (if you remove the zero from
the format, it will be the same width, but space-padded instead.)