changed .C to .cpp in examples

Segment_Delaunay_graph_2/demo/Segment_Delaunay_graph_2/makefile

@@ -48,7 +48,7 @@ my_window.moc:  my_window.h qt_layers.h qt_layers_toolbar.h
 	$(QT_MOC) -o my_window.moc my_window.h
 
 
-polygon_delaunay_graph_2$(OBJ_EXT): polygon_delaunay_graph_2.C \
+polygon_delaunay_graph_2$(OBJ_EXT): polygon_delaunay_graph_2.cpp \
 	pdg_typedefs.h include/pdg_insert.h include/pdg_draw.h \
 	include/CGAL/Segment_Delaunay_graph_vertex_base_with_info_2.h \
 	my_window.moc qt_file_toolbar.moc qt_layers_toolbar.moc
@@ -58,7 +58,7 @@ polygon_delaunay_graph_2$(EXE_EXT): polygon_delaunay_graph_2$(OBJ_EXT)
 	polygon_delaunay_graph_2$(OBJ_EXT) $(LDFLAGS)
 
 
-segment_delaunay_graph_2$(OBJ_EXT): segment_delaunay_graph_2.C \
+segment_delaunay_graph_2$(OBJ_EXT): segment_delaunay_graph_2.cpp \
 	typedefs.h include/sdg_insert.h include/sdg_draw.h \
 	my_window.moc qt_file_toolbar.moc qt_layers_toolbar.moc
 
@@ -74,6 +74,6 @@ clean: \
 #                    suffix rules
 #---------------------------------------------------------------------#
 
-.C$(OBJ_EXT):
+.cpp$(OBJ_EXT):
 	$(CGAL_CXX) $(CXXFLAGS) $(OBJ_OPT) $<
 

Segment_Delaunay_graph_2/doc_tex/Segment_Delaunay_graph_2/Sdg_2_examples.tex

@@ -28,7 +28,7 @@ addition it shows how to use a few of the iterators provided by the
 \ccc{Segment_Delaunay_graph_2} class in order to count a few
 site-related quantities.
 
-\ccIncludeExampleCode{Segment_Delaunay_graph_2/sdg-count-sites.C}
+\ccIncludeExampleCode{Segment_Delaunay_graph_2/sdg-count-sites.cpp}
 
 \subsection{Second Example}
 
@@ -36,7 +36,7 @@ The following example shows how to use the segment Delaunay graph
 hierarchy along with the filtered traits class that supports
 intersecting sites.
 
-\ccIncludeExampleCode{Segment_Delaunay_graph_2/sdg-filtered-traits.C}
+\ccIncludeExampleCode{Segment_Delaunay_graph_2/sdg-filtered-traits.cpp}
 
 \subsection{Third Example}
 
@@ -44,5 +44,5 @@ The following example demonstrates how to recover the defining sites
 for the edges of the Voronoi diagram (which are the duals of the
 edges of the segment Delaunay graph computed).
 
-\ccIncludeExampleCode{Segment_Delaunay_graph_2/sdg-voronoi-edges.C}
+\ccIncludeExampleCode{Segment_Delaunay_graph_2/sdg-voronoi-edges.cpp}