批量if语句多个输入
批量if语句多个输入
提问于 2016-01-11 21:33:39
所以我写了一个有趣的批处理文件，我有一个多项选择语句，所以我有这样的语句：
@echo off
title John's apples
echo.
echo John got 3 apples, he gives 1 away. How many does he have then?
echo (Please answer with ONE capital letter, or type Exit to exit.)
echo =============
echo.
echo A) 2.5
echo B) 3.459475945
echo C) 2
echo D) 1
echo Exit
echo.
:answer
set /p ans=Your Answer:
if "%
if "%ans%"=="a" Echo Please answer with a capital letter!&set /p ans=Your Answer:
if "%ans%"=="b" Echo Please answer with a capital letter!&set /p ans=Your Answer:
if "%ans%"=="c" Echo Please answer with a capital letter!&set /p ans=Your Answer:
if "%ans%"=="d" Echo Please answer with a capital letter!&set /p ans=Your Answer:
if "%ans%"=="A" Echo Wrong! The answer was 2.
if "%ans%"=="B" Echo Wrong! The answer was 2.
if "%ans%"=="C" Echo Right! Good job! The answer was 2.
if "%ans%"=="D" Echo Wrong! The answer was 2.
if "%ans%"=="Exit" exit
Pause
Exit所以现在我想知道，如果有人输入了错误的答案(因为你必须输入一个大写字母，否则它将不起作用)，它什么也不会说。所以我想知道我是怎么做的:如果A，B，C，D不是输入，打印“请输入有效的答案！”
有人能帮上忙吗？这可能已经被问到了，对不起，that...there可能是脚本中的一些随机的东西，因为我正在测试一些东西。
回答 3
Stack Overflow用户
发布于 2016-01-11 22:30:22
@echo off
title John's apples
echo.
echo John got 3 apples, he gives 1 away. How many does he have then?
echo (Please answer with ONE capital letter, or type Exit to exit.)
echo =============
echo.
echo A) 2.5
echo B) 3.459475945
echo C) 2
echo D) 1
echo Exit
echo.
:answer
set /p ans=Your Answer:
if "%ans%"=="a" Echo Please answer with a capital letter!&goto answer
if "%ans%"=="b" Echo Please answer with a capital letter!&goto answer
if "%ans%"=="c" Echo Please answer with a capital letter!&goto answer
if "%ans%"=="d" Echo Please answer with a capital letter!&goto answer
if "%ans%"=="A" Echo Wrong! The answer was 2.&goto end
if "%ans%"=="B" Echo Wrong! The answer was 2.&goto end
if "%ans%"=="C" Echo Right! Good job! The answer was 2.&goto end
if "%ans%"=="D" Echo Wrong! The answer was 2.&goto end
if "%ans%"=="Exit" exit
echo Please enter a valid answer!
goto answer
:end
Pause
ExitStack Overflow用户
发布于 2016-01-11 23:12:46
我猜大写字母的分离是为了单独使用，而不是使用'/i‘参数。这是我的尝试。
@echo off
title John's apples
rem delayed expansion by preference.
setlocal enableDelayedExpansion
:init
cls
rem Added an initial label, and a clear for the 'ans' variable.
set "ans="
echo.
echo John got 3 apples, he gives 1 away. How many does he have then?
echo (Please answer with ONE capital letter, or type Exit to exit.)
echo =============
echo.
echo A) 2.5
echo B) 3.459475945
echo C) 2
echo D) 1
echo Exit
echo.
set /p ans=Your Answer:
rem Check if input is empty, then check for [a,b,c,d] in any case using the '/i' parameter,
rem Upon a valid letter, check for case. As well as a last check for a valid answer.
if not defined ans (
echo Empty input . . .
) else (
if /i "!ans!" equ "exit" (
exit /b
) else (
if /i "!ans!" equ "A" (
if "!ans!" equ "a" echo Please answer with a capital letter!
echo Wrong! The answer was 2.
) else (
if /i "!ans!" equ "B" (
if "!ans!" equ "b" echo Please answer with a capital letter!
echo Wrong! The answer was 2.
) else (
if /i "!ans!" equ "C" (
if "!ans!" equ "c" echo Please answer with a capital letter!
echo Right! Good job! The answer was 2.
) else (
if /i "!ans!" equ "D" (
if "!ans!" equ "d" echo Please answer with a capital letter!
echo Wrong! The answer was 2.
) else (
echo Invalid input . . .
)
)
)
)
)
)
pause
goto :initStack Overflow用户
发布于 2017-07-17 11:33:01
我可能做了一点修改，但这个效果要好得多：
@echo off
color 0a
cls
:game
title John's apples
cls
echo John got 3 apples, he gives 1 away. How many does he have then?
echo (Please answer with ONE capital letter)
echo ===============================================================
echo A) 2.5
echo B) 3.459475945
echo C) 2
echo D) 1
echo E) Exit
set /p ans=
if %ans%== a goto capital
if %ans%== A goto wrong
if %ans%== b goto capital
if %ans%== B goto wrong
if %ans%== c goto capital
if %ans%== C goto correct
if %ans%== d goto capital
if %ans%== D goto wrong
if %ans%== e exit
:wrong
Echo Wrong! The Answer was 2.
pause
exit
:capital
echo Please answer with a capital letter!
pause
goto game
:correct
echo Right! Good job! The answer was 2!
pause
exit页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/34722849
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