Returning a value to Dos

[andrewclarke]

I'm writing a simple console application to detect the windows version. I want to be able to use this from the command line.

I can display the version on screen, but how do I return it for use with errorlevel. I seem to be having a random value returned in errorlevel, no matter what I put in the 'return' value ie..

return(?);

Any help greatly appreciated.

 

[andrewclarke]

Problem solved!

After checking the documentation on the 'IF ERRORLEVEL' batch command, it appears that the value returned from a C program does make it back to the batch file.

For reference,
When using IF ERRORLEVEL to check the return value in a batch file, the statement:

IF ERRORLEVEL 3 GOTO END

means:
If (errorlevel >= 3) then goto END

not:
If (errorlevel == 3) then goto END

A clear case of 'confessional debugging'!

Thanks anyhow.
:~/