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@echo off
setlocal enabledelayedexpansion
set count=0
set var=abcdefghijklmnopqrstuvwxyz
:count
set /a count+=1
for /f %%i in ("%count%") do if not "!var:~%%i,1!"=="" goto count
echo 字符串 %var% 的长度是 %count% 个字符。
pause
@echo off & Setlocal enabledelayedexpansion
set "var=abcdefghijklmnopqrstuvwxyz"
for /L %%i in (1,1,10000) do (
set count=%%i
if "!var:~%%i,1!"=="" call :end & exit /b 0
)
goto:eof
:end
echo 字符串 %var% 的长度是 %count% 个字符。@echo off&Setlocal enabledelayedexpansion
set var=abcdefghijklmnopqrstuvwxyz 1234567890
for /l %%i in (1,1,10000) do if "!var:~%%i,1!"=="" echo %%i&pause>nul
@echo off&setlocal enabledelayedexpansion&set string=%1
for /l %%i in (1,1,65535) do if "!string:~%%i,1!"=="" echo 字符串 %string% 的长度是 %%i 个字符。&pause>nul&exit /b 0
echo 没有参数字符串，长度是 0 个字符。&pause>nul