How To create PreProcessed File in VC++

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To Create a preprocessed file u need to compile a file with Following command line argument.
1 - CL /D [Macro ] (eg : _DEBUG) /EP /P filename(eg ....\123.c)

it will generate a .i file with same file name (eg - 123.i)

The qs is y do i need to create such a preprocessed file.
I am a c++ developer but qnce i need to use some java file to compile written by other person with good coding style using #IFDEF and #endif macros
that is not allowed in java so i was nt able to compile that file.then to compile that java file i need to first preprocess that file to remove this macros and then build the java file.

then steps involved in that:
1 - try to find out wht code need to seperate
2 - write command with given preprocess variables checks
3 compile it the u will get output inform of .i file
rename it as the format it required(eg .i to .java)

Simplest way to get aal the required option for preprocessing
if u r a .NET user
Project or file setting enable the preprocessing optiopn
prop - > c++ ->preprocess ->

rest ask qs if u hav prob.

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