diff --git a/example/Makefile b/example/Makefile
index 01406918..5d13faf5 100644
--- a/example/Makefile
+++ b/example/Makefile
@@ -1,10 +1,9 @@
-CC=gcc -std=c99
+CC=cc -std=c99
 CFLAGS=-Wall -W -pedantic -Wshadow -Wpointer-arith -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wswitch-default -Wswitch-enum -Wcast-align -Wpointer-arith -Wbad-function-cast -Wstrict-overflow=5 -Wstrict-prototypes -Winline -Wundef -Wnested-externs -Wcast-qual -Wshadow -Wunreachable-code -Wlogical-op -Wstrict-aliasing=2 -Wredundant-decls -Wold-style-definition -Wno-unused-function
 CPPFLAGS=-I..
 LDFLAGS=-pthread -lgmp
 RM=rm -f
 EXE=./a.exe
-EXAMPLES=ex01b.c ex01.c ex02.c ex03.c ex04.c ex05.c ex06.c ex07.c ex08.c ex09.c
 
 all:
 	@echo "Nothing to be done."
@@ -12,7 +11,7 @@ all:
 check: examples
 
 examples:
-	for f in $(EXAMPLES) ; do $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -g $$f -o $(EXE)  ; done
+	for f in ex-*.c ; do $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -g $$f -o $(EXE)  ; done
 
 clean:
 	$(RM) $(EXE) *.s *~ *.o ./a.dat
diff --git a/example/ex01.c b/example/ex-array01.c
similarity index 100%
rename from example/ex01.c
rename to example/ex-array01.c
diff --git a/example/ex01b.c b/example/ex-array02.c
similarity index 100%
rename from example/ex01b.c
rename to example/ex-array02.c
diff --git a/example/ex02.c b/example/ex-array03.c
similarity index 100%
rename from example/ex02.c
rename to example/ex-array03.c
diff --git a/example/ex10.c b/example/ex-array04.c
similarity index 100%
rename from example/ex10.c
rename to example/ex-array04.c
diff --git a/example/ex04.c b/example/ex-buffer01.c
similarity index 100%
rename from example/ex04.c
rename to example/ex-buffer01.c
diff --git a/example/ex03.c b/example/ex-dict01.c
similarity index 100%
rename from example/ex03.c
rename to example/ex-dict01.c
diff --git a/example/ex07.c b/example/ex-dict02.c
similarity index 100%
rename from example/ex07.c
rename to example/ex-dict02.c
diff --git a/example/ex09.c b/example/ex-dict03.c
similarity index 100%
rename from example/ex09.c
rename to example/ex-dict03.c
diff --git a/example/ex06.c b/example/ex-list01.c
similarity index 100%
rename from example/ex06.c
rename to example/ex-list01.c
diff --git a/example/ex05.c b/example/ex-multi01.c
similarity index 100%
rename from example/ex05.c
rename to example/ex-multi01.c
diff --git a/example/ex08.c b/example/ex-multi02.c
similarity index 100%
rename from example/ex08.c
rename to example/ex-multi02.c
diff --git a/example/ex11.c b/example/ex-rbtree01.c
similarity index 100%
rename from example/ex11.c
rename to example/ex-rbtree01.c