Re: int to ascii

[stephen]

You need to take a look at the ord, pack, and chr functions. (Look at the first example for 'pack').

map may also fit into your solution someplace. Hint hint. :)

You don't need to typecast it. Perl is a loosely-typed language. There is no syntax to typecast things in Perl.

stephen

[sierrathedog04]

The following program does indeed print out 'ABCD':

use strict;
my $foo = pack("cccc",65,66,67,68);
print $foo;

What I do not understand is why it works. Page 757 of Camel3 says that pack "takes a LIST of ordinary Perl values and converts them into a string of bytes."

Now who says that "A" is a byte? Maybe my operating system uses Unicode and "A" is two bytes. Isn't ASCII a 7-bit encoding scheme? (A byte is eight bits, not 7.)

So why do the bytes that pack returns necessarily print out as 'ABCD' and not as gibberish?

[chipmunk]

Yes, who said that 'A' is a byte? 'A' is merely the ASCII representation of the byte 0x41. If you were using a different character set, then print pack("cccc",65,66,67,68) could very well produce different output.