stdin

[Pravit]

Hi,
I'm just starting to learn Perl and I'm a bit confused. I have a program like this:

print "Enter your name!\n";
$name = <STDIN>;
print "Hello $name!\n";

The problem is that when I run it, it sits there waiting for input, after which it will display the "Enter your name" and "Hello" lines. Why is it trying to get input before it has even executed the first line?

Thanks for any help.

 

[PaulTEG]

<STDIN>

is the same as a keyboard, look at it, 18 octaves (j/K)

Was the name thing a clue, it was also the first line of your script

Why is it trying to get input before it has even executed the first line?

mmmm .....

--Paul


cigless ...

 

[cntr]

You ought to get out more, Paul.

 

[Pravit]

Please clarify your post a bit.

My program does something like this:

(run)
(does nothing...)
(type in 'John')
JohnEnter your name
Hello John!

Shouldn't it show me "Enter your name" before it waits for my input(e.g. "Enter your name John Hello John!")?

 

[tchatzi]

try like this

use strict;
use warnings; 

print "Enter your name: ";

my $name = <STDIN>;
chomp($name);

print "Hello $name!\n";

Tell me what happen

 

[stevexff]

Hey, pengo - you're online again. Welcome back!

 

[Pravit]

It does the same thing:

(does nothing)
(type in gibberish)
fdsfsfdsEnter your name: Hello fdsfsfds!

 

[cntr]

Flush STDOUT?

 

[Pravit]

How would I flush STDOUT?

 

[arcnon]

I would check my line endings

 

[PaulTEG]

$|=1; #flush

 

[chazoid]

http://perl.plover.com/FAQs/Buffering.html