@echo off&setlocal enabledelayedexpansion
set a=O
for /l %%i in (1 1 10) do (
    for /l %%j in (1 1 %%i) do set "str=!!str!! "
    echo !str!!a!
    ping -n 1 127.1>nul
)
set t=!str!
for /l %%i in (10 -1 2) do (
    set "t=!t:~%%i!"
    echo !t!!a!
    ping -n 1 127.1>nul
)
pause
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@echo off&setlocal enabledelayedexpansion
:begin
set /p length=请输入长度:
set /p width=请输入宽度:
set "c=│"&set "l=─"
set "w=┏"&set "x=┓"&set "y=┗"&set "z=┛"
set /a _length=%length%-1
set /a _width=%width%-1
for /l %%k in (1 1 !_length!) do set "str=!str!  "
set "var= "
for /l %%i in (1 1 %length%) do set "var=!var!%l%"
set var1=!w!!var:~1,-1!!x!
echo !var1!
for /l %%j in (1 1 %_width%) do echo !c!!str!!c!
set var2=!y!!var:~1,-1!!z!
echo !var2!
set str=
set var=
goto begin
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@echo off&setlocal enabledelayedexpansion
set "str=  "
for /l %%i in (0 1 20) do (
    for /l %%j  in (0 1 20) do (
        set /a num1=10-%%i,num2=10-%%j
        set /a num=!num1!*!num1!+!num2!*!num2!
        set /a num-=100
        if !num! lss 0 set /a num=-num
        if !num! lss 4 ( set /p=o<nul) else set /p=!str!<nul
    )
    echo.
)
pause
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@echo off&setlocal enabledelayedexpansion
:begin
set /p radius=请输入半径:
if %radius% lss 0 echo 输入有误&goto begin
set /a precision=radius/3+1 
set "str=  "
set /a diameter=%radius%*2
for /l %%i in (0 1 !diameter!) do (
    for /l %%j  in (0 1 !diameter!) do (
        set /a num1=!radius!-%%i,num2=!radius!-%%j
        set /a num=!num1!*!num1!+!num2!*!num2!
        set /a num-=!radius!*!radius!
        if !num! lss 0 set /a num=-num
        if !num! lss %precision% ( set /p=o<nul) else set /p=!str!<nul
    )
    echo.
)
goto begin
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@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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@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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@echo off&setlocal enabledelayedexpansion
:begin
set /p num=请输入台阶级数：
echo.&echo.
    echo   _ @
    echo    ^/     
    echo   ^/  
for /l %%a in (1 1 %num%) do (
    if %%a equ 1 (
      echo ━━━┓
      ) else (
      echo ┗━━┓
    )
    for /l %%i in (1 1 %%a) do set /p=      <nul
)
echo ┗━━━ ^<^<由此上
goto begin
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