如何将参数传递给另一个正在运行的批处理程序 [英] How do I pass parameters to a running batch program by another one

问题描述

示例:

foo.bat :
@echo off
start bar.bat 2 3
set result=//somehow return the value
echo %result%
pause
exit

bar.bat :
@echo off
set int1=%1
set int2=%2
set /a result=%int1%+%int2%
//somehow send the result to the running foo.bat
exit

有人可以告诉我如何做到这一点.我只能考虑编写一个文件并检查文件是否存在以及它包含的内容.但这在我看来很复杂.提前致谢.

can someone give me an idea on how to do this. I can only think about writing a file and checking in a for loop if the file exists and what it contains. But this is way complicated in my opinion. Thanks in advance.

推荐答案

这里有一个替代方案，其中结果变量的名称在子脚本调用期间在主脚本中定义，而不是由子脚本本身定义:

Here is an alternative where the name of the resulting variable becomes defined in the main script during the call of the sub-script rather than by the sub-script itself:

foo.bat:

@echo off
setlocal EnableExtensions DisableDelayedExpansion
rem // Define name of variable to receive result here:
call "%~dp0bar.bat" RESULT 2 3
rem // Return result:
echo Result: %RESULT%
endlocal
exit /B

bar.bat:

@echo off
setlocal DisableDelayedExpansion
set "INT1=%~2"
set "INT2=%~3"
set /A "SUM=INT1+INT2"
rem // Assign variable that has been defined during the call:
endlocal & set "%~1=%SUM%"
exit /B

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