Re: Read two values from input

The code is not with error, it just doesn't work the way you want. Two reasons:

1) <STDIN> reads a complete line until you hit the carriage return key.

2) The line read in by <STDIN> still has that carriage return character at the end

So instead of reading two lines you obviously want to read one line and then separate the two values:

$line=<STDIN>;
chomp $line; # this removes the CR character at line end
($a,$b)= split / +/, $line; #splits the line wherever it finds spaces
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Re^2: Read two values from input by ikegami (Patriarch) on Nov 25, 2011 at 00:43 UTC
`split(' ', $line)` has the advantage of ignoring leading whitespace and accepting tabs in addition to spaces. It also makes the `chomp` useless.	[reply] [d/l] [select]
Re^2: Read two values from input by Marshall (Canon) on Nov 27, 2011 at 12:18 UTC
The default split is /\s+/;. This / +/ is a bit bizarre. The only difference between the default split (/\s+/, $_ ) and split (' ', $_ ) is that in the first case a leading space will generate a null field. Whereas in the second case, this is suppressed. The split on ' ', is a special case and although there is just a space there, it means any of the five white space characters: \f\t\r\n\0x40(space). Because both forms operate on all 5 white space characters, any trailing white space will be ignored in both syntax's (unless there is a specified field limit). There are a lot of tricky special case things about Perl syntax.	[reply]
Re^3: Read two values from input by Anonymous Monk on Nov 27, 2011 at 12:24 UTC
s/There are a lot of tricky special case things about Perl syntax. /There are a lot of context dependent features in Perl, it has a rich (and sometimes ugly) syntax./	[reply]
Re^2: Read two values from input by knils_r00t (Novice) on Nov 29, 2011 at 10:14 UTC
Thanks jethro... And every one who visited for help....Thanku	[reply]