changed .C to .cpp in examples

Nef_2/demo/Nef_2/makefile

@@ -36,17 +36,17 @@ LDFLAGS = \
 
 all: nef_2
 
-Qt_widget_toolbar$(OBJ_EXT): Qt_widget_toolbar.C Qt_widget_toolbar.moc
-	$(CGAL_CXX) $(CXXFLAGS) $(OBJ_OPT) Qt_widget_toolbar.C
+Qt_widget_toolbar$(OBJ_EXT): Qt_widget_toolbar.cpp Qt_widget_toolbar.moc
+	$(CGAL_CXX) $(CXXFLAGS) $(OBJ_OPT) Qt_widget_toolbar.cpp
 
 Qt_widget_toolbar.moc: Qt_widget_toolbar.h
 	$(QT_MOC) -o Qt_widget_toolbar.moc Qt_widget_toolbar.h
 
-nef_2.moc: nef_2.C
-	${QT_MOC} -o nef_2.moc nef_2.C
+nef_2.moc: nef_2.cpp
+	${QT_MOC} -o nef_2.moc nef_2.cpp
 
-nef_2$(OBJ_EXT): nef_2.C nef_2.moc
-	$(CGAL_CXX) $(CXXFLAGS) $(OBJ_OPT) nef_2.C
+nef_2$(OBJ_EXT): nef_2.cpp nef_2.moc
+	$(CGAL_CXX) $(CXXFLAGS) $(OBJ_OPT) nef_2.cpp
 
 nef_2$(EXE_EXT): nef_2$(OBJ_EXT) Qt_widget_toolbar$(OBJ_EXT)
 	$(CGAL_CXX) $(EXE_OPT)nef_2 nef_2$(OBJ_EXT) \
@@ -61,5 +61,5 @@ clean: nef_2.clean \
 #                    suffix rules
 #---------------------------------------------------------------------#
 
-.C$(OBJ_EXT):
+.cpp$(OBJ_EXT):
 	$(CGAL_CXX) $(CXXFLAGS) $(OBJ_OPT) $<

Nef_2/doc_tex/Nef_2/user.tex

@@ -65,7 +65,7 @@ standard two-dimensional CGAL kernel (\ccc{CGAL::Point_2<K>}
 and \ccc{CGAL::Line_2<K>}). Their user interface is thus defined in
 the corresponding reference pages.
 
-\ccIncludeExampleCode{Nef_2/construction.C}
+\ccIncludeExampleCode{Nef_2/construction.cpp}
 
 Planar halfspaces (as used in the definition) are modelled by oriented
 lines. In the previous example \ccc{N1} is the Nef polyhedron

Nef_2/doc_tex/Nef_2_ref/Nef_polyhedron_2.tex

@@ -251,7 +251,7 @@ where \ccc{NT} is a field type, and finally
 first). The following example uses the filtered homogeneous kernel to
 construct the intersection of two halfspaces.
 
-\ccIncludeExampleCode{Nef_2/simple_intersection.C}
+\ccIncludeExampleCode{Nef_2/simple_intersection.cpp}
 
 After line (*) \ccc{N3} is the intersection of \ccc{N1} and \ccc{N2}. 
 The member types of \ccc{Nef_polyhedron_2< Extended_homogeneous<NT> >}

Nef_2/examples/Nef_2/makefile

@@ -59,7 +59,7 @@ clean: \
 #                    suffix rules
 #---------------------------------------------------------------------#
 
-.C$(OBJ_EXT):
+.cpp$(OBJ_EXT):
 	$(CGAL_CXX) $(CXXFLAGS) $(OBJ_OPT) $<
 
 .cpp$(OBJ_EXT):