Writing an integer to a file

[endfx]

I have a variable that holds a number:

my $num = 0;

I want to write that number to a file such that 0 (NULL) shows up in the file rather than it's ascii value (0x30 or 48) ... I'm making a binary file, not a text file.

I've tried the following:

open FILE, ">", "test.bin"
printf FILE "%c", $num
printf FILE "%u", $num
printf FILE "%x", $num

But it always shows up as the ascii rather than the actual value.

Can anyone help me?
I would also like to know that this number will always be less than 256, so the value it writes has to go into 1 byte.
Can't use up 4 bytes or anything like that.

Thanks for looking.

 

[feherke]

Hi

If you want to [tt]print[/tt] out the character with code $num :

print FILE chr $num;

Feherke.

http://rootshell.be/~feherke/

 

[endfx]

Looks good, thanks.