diff --git a/commun.c b/part2.c
similarity index 100%
rename from commun.c
rename to part2.c
diff --git a/commun.h b/part2.h
similarity index 100%
rename from commun.h
rename to part2.h
diff --git a/testcommun.c b/tpart2.C
similarity index 100%
rename from testcommun.c
rename to tpart2.C