dump the content of a string

[toylet]

my $line=<>;

I input 'a' and press enter.

$line should now be 2 bytes in length.

1. How could I access the 2 bytes respectively
2. and print them in hex format?

 

[Web Surfer]

[This followup was posted to comp.lang.perl.misc]

my $line=<>;

I input 'a' and press enter.

$line should now be 2 bytes in length.

1. How could I access the 2 bytes respectively

You can use "substr" to extract portions of strings

2. and print them in hex format?

printf "%02x\n",$data; # print data in hex

 

[Jürgen Exner]

my $line=<>;

I input 'a' and press enter.

$line should now be 2 bytes in length.

Not necessarily. It depends on your OS.
If you want to write portable code don't expect the input to be just 2
characters.

1. How could I access the 2 bytes respectively

perldoc -f substr

2. and print them in hex format?

perldoc -f ord
perldoc -f hex

jue

 

[Uri Guttman]

JE> perldoc -f ord
JE> perldoc -f hex

hex converts from ascii hex to binary. it doesn't print hex.

sprintf or unpack are two ways to do it.

uri