diff --git a/fwrap.c b/fwrap.cpp
similarity index 100%
rename from fwrap.c
rename to fwrap.cpp
diff --git a/fwrap2.c b/fwrap2.cpp
similarity index 100%
rename from fwrap2.c
rename to fwrap2.cpp
diff --git a/fwrap3.c b/fwrap3.cpp
similarity index 100%
rename from fwrap3.c
rename to fwrap3.cpp
diff --git a/module_files.c b/module_files.cpp
similarity index 100%
rename from module_files.c
rename to module_files.cpp
diff --git a/module_output.c b/module_output.cpp
similarity index 100%
rename from module_output.c
rename to module_output.cpp
diff --git a/pp_sys.c b/pp_sys.cpp
similarity index 100%
rename from pp_sys.c
rename to pp_sys.cpp