batman

@echo off
:again
setlocal
cls&set /p long=请输入矩形的长度：
set /p high=请输入矩形的宽度：
set /a long-=2,high-=2
call :lp ┌  ┐
for /l %%a in (1,1,%high%) do call :lp │ │
call :lp └  ┘
pause>nul&endlocal&goto again
:lp
set /p=%1<nul
for /l %%i in (1,1,%long%) do (
     if "%1" neq "│" (
        set /p=─<nul
        ) else (
        set /p=  <nul
     )
)
set /p=%2<nul&echo.
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batman

@echo off&setlocal enabledelayedexpansion
set /p num=请输入台阶级数：
echo.&echo.&echo 由此下^>^>
for /l %%a in (1,1,%num%) do (
    set /a a+=2
    if %%a equ 1 (
      echo ━━┓
      ) else (
      echo ┗━┓
    )
    for /l %%i in (1,1,!a!) do set /p=  <nul
)
echo ┗━━━ ^<^<由此上
pause>nul
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