feat(ex05): it works

ex05/.gitignore

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+ex05

ex05/Harl.cpp

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+#include "Harl.hpp"
+#include <iostream>
+
+typedef void (Harl::*HarlComplaint)(void);
+
+int getLevelIdx(std::string level) {
+  static const std::string levels[] = {
+      "debug",
+      "info",
+      "warning",
+      "error",
+  };
+  for (int i = 0; i < 4; i++) {
+    if (level == levels[i])
+      return i;
+  }
+  return -1;
+}
+
+void Harl::complain(std::string level) {
+  static const HarlComplaint dispatcher[] = {
+      &Harl::debug,
+      &Harl::info,
+      &Harl::warning,
+      &Harl::error,
+  };
+  int idx = getLevelIdx(level);
+  if (idx < 0 || idx > 3)
+    wrongLevel();
+  else {
+    HarlComplaint complaint = dispatcher[idx];
+    (this->*complaint)();
+  }
+}
+
+void Harl::debug() {
+  std::cout
+      << "I love having extra bacon for my "
+         "7XL-double-cheese-triple-pickle-special-ketchup burger. I really do!"
+      << std::endl;
+}
+
+void Harl::info() {
+  std::cout
+      << "I cannot believe adding extra bacon costs more money. You didn’t put "
+         "enough bacon in my burger! If you did, I wouldn’t be asking for more!"
+      << std::endl;
+}
+
+void Harl::warning() {
+  std::cout
+      << "I think I deserve to have some extra bacon for free. I’ve been "
+         "coming for years, whereas you started working here just last month."
+      << std::endl;
+}
+
+void Harl::error() {
+  std::cout << "This is unacceptable! I want to speak to the manager now."
+            << std::endl;
+}
+
+void Harl::wrongLevel() { std::cout << "Wait, I'm confused..." << std::endl; }

ex05/Harl.hpp

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+#ifndef HARL_HPP
+#define HARL_HPP
+
+#include <string>
+
+class Harl {
+public:
+  void complain(std::string level);
+
+private:
+  void debug(void);
+  void info(void);
+  void warning(void);
+  void error(void);
+
+  void wrongLevel(void);
+};
+
+#endif

ex05/Makefile

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+NAME = ex05
+ifeq ($(CPPFLAGS),)
+	CPPFLAGS = -Wall -Wextra -Werror -std=c++98 -g
+endif
+ifeq ($(CXX),)
+	CXX = c++
+endif
+# g++ is the default on 42 computers
+ifeq ($(CXX),g++)
+	CXX = c++
+endif
+srcs = \
+	Harl.cpp \
+
+main_objs = main.o $(srcs:.cpp=.o)
+all_objs = $(main_objs)
+deps = $(all_objs:.o=.d)
+
+all: $(NAME)
+
+-include $(deps)
+
+$(NAME): $(main_objs)
+	$(CXX) $(CPPFLAGS) -o $@ $^
+
+%.o: %.cpp
+	$(CXX) -c $(CPPFLAGS) -o $*.o $*.cpp
+	$(CXX) -MM $(CPPFLAGS) -MT $*.o $*.cpp > $*.d
+
+clean:
+	find . -name '*.o' -print -delete
+	find . -name '*.d' -print -delete
+
+fclean: clean
+	rm -f $(NAME)
+
+re:
+	+make fclean
+	+make all

ex05/main.cpp

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+#include "Harl.hpp"
+
+int main(void) {
+  Harl harl;
+
+  harl.complain("Debug");
+  harl.complain("debug");
+  harl.complain("info");
+  harl.complain("warning");
+  harl.complain("error");
+  return 0;
+}