bugs fixed

makefile

@@ -1,33 +1,29 @@
 TARGET = Q2
+
 CXX = g++
+
 CXXFLAGS = -Wall -Wextra -std=c++11
+
 SRCS = main.cpp
 TEST = cache_test.cpp
-OBJS = $(SRCS:.cpp=.o)
 
-ifeq ($(OS),Windows_NT)
-    RM = del
-    RUN = $(TARGET).exe
-else
-    RM = rm -f
-    RUN = ./$(TARGET)
-endif
+OBJS = $(SRCS:.cpp=.o)
 
 all: $(TARGET)
 
 $(TARGET): $(OBJS)
- $(CXX) -o $@ $^
+	$(CXX) -o $@ $^
 
 %.o: %.cpp
- $(CXX) $(CXXFLAGS) -c $< -o $@
+	$(CXX) $(CXXFLAGS) -c $< -o $@
 
 test:
- $(CXX) $(CXXFLAGS) $(TEST) -o cache_test
+	$(CXX) $(CXXFLAGS) $(TEST) -o cache_test
+
 
 clean:
- $(RM) $(OBJS) $(TARGET) cache_test
-
+	rm -f $(OBJS) $(TARGET)
 run: $(TARGET)
- $(RUN)
+	./$(TARGET)
 
-.PHONY: all clean run test
+.PHONY: all clean run