I'm new to Doxygen, 
I have few doubts regarding this- 

1. Can we generate flowchart from C code using Doxygen?
2. If yes, Is there any plugin required? Actually i installed GraphViz for CallGraph.
3. If any relevant link for generating flowchart using Doxygen please share here?
4. If No, Is there any tool will generate both documentation as well as flowchart using C code?

Please answer me if you know.
Thanks in advance.