add ex01

ex01/Makefile

@@ -0,0 +1,25 @@
+CXX = c++
+CPPFLAGS = -std=c++98 -Wall -Wextra -Werror -g
+SRCDIR = src
+OBJDIR = obj
+NAME = ex01
+
+SRCS = $(wildcard $(SRCDIR)/*.cpp)
+OBJS = $(patsubst $(SRCDIR)/%.cpp,$(OBJDIR)/%.o,$(SRCS))
+
+all: $(NAME)
+
+$(OBJDIR)/%.o: $(SRCDIR)/%.cpp
+	mkdir -p obj
+	$(CXX) $(CPPFLAGS) -c $< -o $@
+
+$(NAME): $(OBJS)
+	$(CXX) $(CPPFLAGS) $^ -o $@
+
+clean:
+	rm -rf $(OBJDIR)/*.o
+
+fclean: clean
+	rm -fr $(NAME)
+
+re: fclean all