Source Code Analysis Tools help in understanding the Code Flow better.
Popular C/C++ Source Code Analysis Tools:
1. Source Navigator
2. Source Insight
3. CBrowser
4. CScope
5. Source Browser - For C Language Analysis
6. Flawfinder - is a Programming Tool that examines C or C++ Source Code looking for Security Weaknesses.
Source Navigator - Source Navigator is an OpenSource C++ Source Code Analysis Tool .With it, you can edit your source code, display relationships between classes and functions and members, and display call trees.
Links:
Source Navigator - http://sourceforge.net/project/showfiles.php?group_id=51180
Happy Source Code Analysis!!!