gcc compared to VC6

hello,
im a windows'user ,thinking to try linux(maybe redhat 7.2)
but im portability of my compiled programs in linux environment , will it work in windows?????
and im wondering what features r enclosed in gcc ? and what about its IDE compared to VC6
thankn in advance!

Unless you use special GCC extensions like Inline ASM its %100 portable granted that you dont use linux spesific header files.

As an IDE you can use Anjuta http://anjuta.sourceforge.net