new line problem for string

[200720082009]

Hi,

...
$cotents ='';
...
$newString = 'hello\n';
$cotents .= $newString;

open OUT, ">$FILE" or die "Can not open $FILE for writing :$!";
print OUT $contents;
...


I tried to add a new string (named $newString) with a new line at the end of that string to a string variable ($contents). Then when I tried to write that $contents into an output file. I found the output file actually contains hello\n instead of a 'hello' and a new line. Anybody could help me out how to write a string with a new line to a file?

Thanks.

Mike

 

[chrismassey]

$newString = 'hello\n';

I think its because you have declared 'hello\n' as a string. You should wrap it in quotations to ensure the \n is evaluated as being a 'new line indicator'. So...

$newString = "hello\n";

I'm really only a beginner at Perl, so forgive me if this isn't what is wrong .

Chris

 

[rharsh]

I would suggest putting "use strict;" and "use warnings;" near the top of all your scripts.

[red][b]$cotents[/b][/red] ='';
...
$newString = 'hello\n';
[red][b]$cotents[/b][/red] .= $newString;

open OUT, ">$FILE" or die "Can not open $FILE for writing :$!";
print OUT [blue][b]$contents;[/b][/blue]

 

[KevinADC]

chrissmassey is correct, the '\n' muct be in a double-quoted string to be interpolated as a newline metacharacter and not a literal \ followed by an n.

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- Kevin, perl coder unexceptional!