What IDE can I use to edit Tor source code as a single project? Can I use Eclipse with C/C++? I tried it with Eclipse but I get errors : "some type not dedined." Which IDE is best to edit Tor source?
It is difficult to learn a new tool (e.g. an IDE) and a new code base at the same time. The best tool is the one you are most comfortable with.
If you are new to C, Wikipedia has a pretty comprehensive comparison of C/C++ IDES that you can use to best meet your needs and skill level.