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You can do like this, if the number of character is fixed

#!/usr/bin/perl use strict; use warnings; my $str="30 30 36 33 36 36 36 33 36 34 26 24 21 17 17 23 27 27 31 31 3 +4 33 33 33 36 36 37 38 38 38 38 38 35 40 34 34 34 31 37 36 37 37 40 4 +0 49 40 40 40 40 40 40 40 40 33 30 30 30 30 30 42 45 45 45 45 45 49 4 +2 42"; open (OUT,">format.out"); my @array=split(/ /,$str); for (0..19){ print OUT "$array[$_] "; } close(OUT);

Punitha

Updated after the reply from heidi

I misunderstood the question, thanks for the reply heidi. So here is the code you needed,

#!/usr/bin/perl use strict; use warnings; my $str="30 30 36 33 36 36 36 33 36 34 26 24 21 17 17 23 27 27 31 31 3 +4 33 33 33 36 36 37 38 38 38 38 38 35 40 34 34 34 31 37 36 37 37 40 4 +0 49 40 40 40 40 40 40 40 40 33 30 30 30 30 30 42 45 45 45 45 45 49 4 +2 42"; open (OUT,">format.out"); my @array=split(/ /,$str); my $cnt=0; foreach (0..$#array){ ++$cnt; if ($cnt % 20 == 0){ print OUT "$array[$_]\n"; } else{ print OUT "$array[$_] "; } } close(OUT);

Punitha


In reply to Re: printing 20 characters in a line. by Punitha
in thread printing 20 characters in a line. by heidi

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