Shell Programming and Scripting

I found a post from a user requesting help rounding numbers. The script provided by Scrutinizer works fine most of the time but it errors out when trying to round these numbers:

30224939
50872456
20753012

They have in common, a zero in the second digit from left to right. Can someone help me correct this?

The original response by Scrutinizer is:

Hi, as an alternative to calculus you could use string operations and a simple addition:
•Take the first digit and add 1.
•Replace the rest of the digits with zeroes
•Stick them together.

Here is an example of how this can be achieved. If you find it a little overwhelming, just try your own code. There are many ways to get from a to b.

Code:

while read i ;do
   x=$((i-${i#?}))
   echo $((${x%%0*}+1))${x#?}
done < infile

Thanks,

Dennis

Rounding towards what? How about posting the link so we get some more context?

---------- Post updated at 18:37 ---------- Previous update was at 18:26 ----------

Anyhow, try (bash):

Code:

while read i ;do printf "%d%0*d\n" $((${i%${i#?}}+1)) $((${#i}-1)) 0; done < file
40000000
60000000
30000000