赢bat文件：如何前导零添加到一个变量在for循环？ [英] Win bat file: How to add leading zeros to a variable in a for loop?

问题描述

很简单，我想......我需要通过添加前导零的循环索引变量（%%一）项以获得一个可用的变量。

Very simple, I guess... I need to get a usable variable by adding leading zeros to the loop index variable (%%i) below.

@echo off
for /L %%i in (1, 1, 5) do (
     echo %%i

     rem     How to create a variable j here as a 
     rem     result of adding leading zeros to %%i? (001, 002, 003 etc.)

)
pause

如何？
我试过以下，但我不能让值超出了我%%在...

How? I've tried the following, but I can't get the value out of the %%i variable inte the var_ at a...

@echo off & setlocal enableextensions
for /L %%i in (1, 1, 5) do (
     echo %%i
     set var_=00000%%i
     set var_=%var_:~-5%
     echo %var_%
)
pause

推荐答案

的正常方式是preFIX用零的字符串，然后取字符的所需计数从右侧

The normal way is to prefix your string with zeros and then take the desired count of characters from the right side.

@echo off
set count=5
setlocal EnableDelayedExpansion
for /L %%i in (1, 1, %count%) do (
     set "formattedValue=000000%%i"
     echo !formattedValue:~-3!
)

此输出

001
002
003
004
005

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