qixiaobin0715

@echo off
setlocal enabledelayedexpansion
for /l %%i in (1,1,40) do set "space=!space! "
for /f "tokens=1* delims=:" %%a in ('findstr /o .* 1.txt') do (
    if defined num2 (
        set /a "num1=(%%a-!num2!)/2"
        call echo,%%str:~!num1!%%
    )
    set num2=%%a
    set str=!space!%%b
)
pause
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