Graphviz file for drawing a dependency graph. http://www.graphviz.org/

dependency_graph.gv

// Online Graphviz: http://webgraphviz.com/
// https://i.imgur.com/NHmoDnj.png

digraph g{
  node [shape="box",style=rounded];
  "a.out" -> "C.o"
  "a.out" -> "B.o"
  "a.out" -> "A.o"
  "C.o" -> "C.cpp"
  "B.o" -> "B.cpp"
  "A.o" -> "A.cpp"
  "C.cpp" -> "C.h"
  "B.cpp" -> "B.h"
  "A.cpp" -> "A.h"
  "a.out" -> "main.o"
  "main.o" -> "main.cpp"
  "main.cpp" -> "C.h"
  "main.cpp" -> "B.h"
  "C.h" -> "A.h"
  "B.h" -> "A.h"
}

You can simplify this by setting a default shape and style like this:
node [shape="box"; style=rounded];

Thanks for the tip! I also simplified the labels.

This gist is so old that I don't even remember why I posted it...

It's a useful snippet, thanks! :)