Question

我正在创建一个提醒，当一段时间过去后会弹出一个文本文件，我想要实现的是倒计时（在即将到来的循环开始之前剩下多少秒和分钟）。一切似乎都很顺利，直到我尝试将分钟和秒组合成一行的部分。它在行"300 not expected here"之后给出了echo Left (in minutes): %leftMinutes%错误。任何和所有的帮助将不胜感激。

代码

:Start
set /a wait = 0
set /a waitMinutes = 0
set /a left59 = %real_time% - 59 :: %real_time% is the inputed minutes,
                                 :: converted to seconds.
cls
color 0a
for /f "delims=" %%a in (Notes.txt) do (
set notes=%%a
)
cd %~dp0/Notes
start Notes.txt
goto Loop

:Loop
cls
echo Waiting for %answer_time% minutes.
echo.
set /a leftSeconds = %real_time% - %wait%
echo Left (in seconds): %leftSeconds%
set /a leftMinutes = %answer_time% - %waitMinutes%
echo Left (in minutes): %leftMinutes%
if %wait% LSS %left59% ( :: Checks if there's one more minute left in
                         :: %real_time%.
    if %wait% GEQ %left59% ( :: Checks if there's no more minutes left
                             :: in %real_time%.
        echo Left (both): %leftSeconds%
    )
    echo Left (both): %leftMinutes% and %leftSeconds%
)
timeout -t 1 -nobreak > nul
set /a wait += 1
if %wait% == 60 (
    set /a waitMinutes += 1
)
if not %wait% == %real_time% (
    goto Loop
)
if %wait% GEQ %real_time% (
    if %waitMinutes% == %answer_time% (
    taskkill -f -im Notepad.exe
    goto Start
    )
)

Answer 1

Never use :label nor :: label-like comment inside a command block enclosed in () parentheses;使用REM代替::
转义)个命令中的所有echo。即使在echo中，未转义的右括号仍然是右括号。

例如，使用

echo Left (both): %leftSeconds%

echo Left (both^): %leftSeconds%
rem            ^ note the caret

和mutatis mutandis，

echo Left (both^): %leftMinutes% and %leftSeconds%
rem            ^ note the caret

请阅读Syntax : Escape Characters, Delimiters and Quotes文章。

最小更改（可能不完整）如下：

if %wait% LSS %left59% ( REM Checks if there's one more minute left in
                         REM %real_time%.
    if %wait% GEQ %left59% ( REM Checks if there's no more minutes left
                             REM in %real_time%.
        echo Left (both^): %leftSeconds%
    )
    echo Left (both^): %leftMinutes% and %leftSeconds%
)

为什么我得到“300不期望”的错误？

代码

1 个答案: