diff --git a/01/3/3_shortest b/01/3/3_shortest.c
similarity index 100%
rename from 01/3/3_shortest
rename to 01/3/3_shortest.c
diff --git a/01/3/3_stringver b/01/3/3_stringver.c
similarity index 100%
rename from 01/3/3_stringver
rename to 01/3/3_stringver.c