what is gcc -e option in C

Applications Programming
1

hi

could any one tell me why we r using -e option in gcc ?

thanks

2

I could not find -e in my version of gcc. Instead -E was there. The man page says

       -E  Stop after the preprocessing stage; do not run the compiler proper.
           The output is in the form of preprocessed source code, which is sent
           to the standard output.

           Input files which don't require preprocessing are ignored.
3

could u give me example as i did not get

4

gcc -E source.c

will emit the pre-processed source, eg expand headers, macros but do no compilation.