Re: newbie question: how to convert str to int in c-shell?

2006-10-31, 03:07(-05), Chris F.A. Johnson:
On 2006-10-31, neo wrote:
hi, i am a newbie in shell. i am using c shell.

If you want to write a script, don't use csh.

say convert a argument to int.
if it is not a int , some flag or message should be got.
how to do so in a neat way?

A simple test for a numeric argument, in a standard shell is:

case $n in
*[!0-9]*) printf "%s\n" "Not a number" ;;

"" | *[!0-9]*) ...

for unsigned int, assuming you don't want to check for
boundaries (too big numbers) and that 089 would not be taken as
an invalid octal number.

esac



--
Stéphane
.

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