--- a/CbC-examples/Makefile	Sat Nov 03 19:49:09 2018 +0900
+++ b/CbC-examples/Makefile	Thu Nov 08 06:52:59 2018 +0900
@@ -1,4 +1,4 @@
-TEST = arg.exe conv1.exe fact-a.exe goto.exe loto6.exe stack1.exe test02.exe test05.exe test1.exe test2.exe test_cs.exe test_csp1.exe test_env.exe test_func2code.exe test_para2.exe test_para3.exe test_para4.exe test_para.exe test_tree.exe tmp1.exe tmp2.exe tmp4.exe tmpa.exe too-long-argument.exe
+TEST = arg.exe conv1.exe fact-a.exe goto.exe loto6.exe stack1.exe test02.exe test05.exe test1.exe test2.exe test_cs.exe test_csp1.exe  test_func2code.exe test_para2.exe test_para3.exe test_para4.exe test_para.exe test_tree.exe tmp1.exe tmp2.exe tmp4.exe tmpa.exe too-long-argument.exe
 
 .SUFFIXES: .exe
 
@@ -9,3 +9,6 @@
 	for exe in ${TEST} ; do \
 		 ./$${exe} ; \
 	 done
+
+clean : 
+	rm -f ${TEST}