China DOS Union

I want to make a batch processing to achieve that when running, it requires entering a string, and then turns to the corresponding branch according to this string. (It must be entered during running, and the form of adding parameters at the beginning cannot be used). How should I do it?

I started to want to use environment variables, and use a batch processing enhancement program INPUT to accept keyboard input, but it didn't work. My program is:
cls
input "Please Input:" FN /s rem: This sentence is to accept input and assign it to "FN"
if FN=="aaa" goto a
if FN=="bbb" goto b
goto c

:a
echo This is a
goto c

:b
echo this is b
goto c

:c
End!!!
Later, I found that the batch processing enhancement command INPUT didn't work.

Dear experts, please help.

You can consider using choice. It's very simple to use. Just type choice /? to see how to use it.

To PLATCH:

Running and accepting string variables is a major weakness of bat. If there are no other enhanced commands to help, simply relying on the internal and external commands that come with DOS to achieve this feature, the amount of code will be astonishing (I have tried it myself), and the value is not very great.

When I encounter such problems, I generally convert it into accepting string parameters from the command line, and then transfer to the corresponding subroutine site. This is not too difficult to implement:

:start
find ":%1" > nul
if errorlevel 0 goto error
goto %1

:proc1
......

:proc2
......

:error
echo Invalid argument!

:end

If you must implement this function, I can give you a suggestion. Throw out a DOS sub-SHELL from the main program with %comspec%, pass in the string disguised as the command line to the program, and then implement the subroutine as an independent bat program and call it directly. Maybe I didn't make it very clear. If you want to discuss this problem, contact me again!

I tried, it's not that INPUT doesn't work, but that this batch program itself has serious bugs.

For example:
if FN=="aaa" goto a
if FN=="bbb" goto b

Should be changed to:

if "%FN%"=="aaa" goto a
if "%FN%"=="bbb" goto b

One more thing:

if "%FN%"=="bbb" goto b
How to represent the inequality sign in Chinese?

As far as I know, without using the inequality symbol notation like "!=" in C++ or "<>" in VB, we can only use:
if not "%FN%"== "bbb" goto b

If you only use the 26 letters (like drive letters) as input, you can use the following cumbersome method:

Choice /C:defghijklmnopqrstuvwxyz /n Please Input disk symbol
if errorlevel 23 set input=z
if errorlevel 23 goto z
if errorlevel 22 set input=y
if errorlevel 22 goto y
if errorlevel 21 set input=x
if errorlevel 21 goto x
if errorlevel 20 set input=w
if errorlevel 20 goto w
if errorlevel 19 set input=v
if errorlevel 19 goto v
if errorlevel 18 set input=u
if errorlevel 18 goto u
if errorlevel 17 set input=t
if errorlevel 17 goto t
if errorlevel 16 set input=s
if errorlevel 16 goto s
if errorlevel 15 set input=r
if errorlevel 15 goto r
if errorlevel 14 set input=q
if errorlevel 14 goto q
if errorlevel 13 set input=p
if errorlevel 13 goto p
if errorlevel 12 set input=o
if errorlevel 12 goto o
if errorlevel 11 set input=n
if errorlevel 11 goto n
if errorlevel 10 set input=m
if errorlevel 10 goto m
if errorlevel 9 set input=l
if errorlevel 9 goto l
if errorlevel 8 set input=k
if errorlevel 8 goto k
if errorlevel 7 set input=j
if errorlevel 7 goto j
if errorlevel 6 set input=i
if errorlevel 6 goto i
if errorlevel 5 set input=h
if errorlevel 5 goto h
if errorlevel 4 set input=g
if errorlevel 4 goto g
if errorlevel 3 set input=f
if errorlevel 3 goto f
if errorlevel 2 set input=e
if errorlevel 2 goto e
if errorlevel 1 set input=d
if errorlevel 1 goto d

Can set /p be used?

set /p input= Please input a "string"
if %input%=="aaa" goto a
if %input%=="bbb" goto b

[ Last edited by hxj on 2006-5-2 at 08:26 ]