How to force gcc preprocessor to preserve whitespace?

问题

For the code:

int  i;

gcc preprocessor outputs:

int i;

How to force it to preserve whitespace?

I call preprocessor with: gcc -E somefile.c command.

回答1:

Use it in traditional mode, ie '-traditional-cpp' as described here.

来源：https://stackoverflow.com/questions/445986/how-to-force-gcc-preprocessor-to-preserve-whitespace