@@ -2,7 +2,7 @@ MODULEFLAGS = -fPIC -fno-stack-protector

 MODULEOBJS = dual_control.o

 .PHONY: all

-all: dual_control.a dual_control_test

+all: test dual_control.a

 dual_control.a: $(MODULEOBJS)

 	ar rvs $@ $^

@@ -14,7 +14,7 @@ $(MODULEOBJS): %.o: %.c

 .PHONY: clean

 clean:

 	rm -f *.o *.a

-	rm dual_control_test

+	rm -f dual_control_test

 .PHONY: distclean

 distclean: clean

@@ -23,3 +23,7 @@ distclean: clean

 dual_control_test: dual_control_test.c $(MODULEOBJS)

 	$(CC) $(CFLAGS) $(CPPFLAGS) -o $@ $^

+.PHONY: test

+test: dual_control_test

+	./dual_control_test

+

@@ -50,10 +50,11 @@ int main(int argc, char* argv[]) {

     if (test1_result && test2_result && test3_result) {

         printf("success!\n");

+        return 0;

     } else {

         printf("fail\n");

+        return 1;

     }

-    return 0;

 }