I want to take a string of numbers and turn each number into a text file title

I was looking to turn a string of numbers (A million digits of Pi). Each number I would like to become a file name

For Example

3.14159

I would like 3 to be a text file name
. to be a text file name
1 to be a text file name
4 to be a text file name
1 to be a text file name
5 to be a text file name
9 to be a text file name
and etc etc etc.

I have searched the internet but nothing has come up.

If anyone would be able to help me with the code for that it would be great!

Solution

I also don't get it what is your goal. I guess you want probably count the number of character in the string.

Thus this can help:

@echo off
if not exist pi-folder\nul md pi-folder
pushd pi-folder

setlocal enabledelayedexpansion
echo 3.1234567890abc>"%tmp%\pi.tmp"
for %%l in ("%tmp%\pi.tmp") do set /a len=%%~zl
set /a len-=2
set /a count=len - 2
echo:
echo 3.1234567890abc count !count! characters after the dot
echo:

pause>nul
rem create one file per character
for /l %%i in (-1,-1,-%len%) do (
  for /f %%a in (%tmp%\pi.tmp) do (
    set char=%%a
    if "!char:~%%i,1!" neq "." (
      copy nul !char:~%%i,1!
    ) else (
      copy nul !char:~%%i,1!~
    )
  )
)
endlocal
popd

output:

3.1234567890abc count 13 characters after the dot

copy nul c
copy nul b
copy nul a
copy nul 0
copy nul 9
copy nul 8
copy nul 7
copy nul 6
copy nul 5
copy nul 4
copy nul 3
copy nul 2
copy nul 1
copy nul .~
copy nul 3

result after dir /b: