diff --git a/ex06/.gitignore b/ex06/.gitignore
new file mode 100644
index 0000000..11d101f
--- /dev/null
+++ b/ex06/.gitignore
@@ -0,0 +1 @@
+harlFilter
diff --git a/ex06/Harl.cpp b/ex06/Harl.cpp
new file mode 100644
index 0000000..c7349db
--- /dev/null
+++ b/ex06/Harl.cpp
@@ -0,0 +1,75 @@
+#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) {
+  int idx = getLevelIdx(level);
+  switch (idx) {
+  case 0:
+    std::cout << "[ DEBUG ]" << std::endl;
+    debug();
+    std::cout << std::endl;
+  case 1:
+    std::cout << "[ INFO ]" << std::endl;
+    info();
+    std::cout << std::endl;
+  case 2:
+    std::cout << "[ WARNING ]" << std::endl;
+    warning();
+    std::cout << std::endl;
+  case 3:
+    std::cout << "[ ERROR ]" << std::endl;
+    error();
+    std::cout << std::endl;
+    break;
+  default:
+    wrongLevel();
+    break;
+  }
+}
+
+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 << "[ Probably complaining about insignificant problems ]"
+            << std::endl;
+}
diff --git a/ex06/Harl.hpp b/ex06/Harl.hpp
new file mode 100644
index 0000000..405f48e
--- /dev/null
+++ b/ex06/Harl.hpp
@@ -0,0 +1,19 @@
+#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
diff --git a/ex06/Makefile b/ex06/Makefile
new file mode 100644
index 0000000..f731e60
--- /dev/null
+++ b/ex06/Makefile
@@ -0,0 +1,39 @@
+NAME = harlFilter
+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
diff --git a/ex06/main.cpp b/ex06/main.cpp
new file mode 100644
index 0000000..e450aa0
--- /dev/null
+++ b/ex06/main.cpp
@@ -0,0 +1,12 @@
+#include "Harl.hpp"
+
+int main(int argc, char *argv[]) {
+  std::string level;
+  if (argc != 2)
+    level = "invalid";
+  else
+    level = argv[1];
+  Harl harl;
+  harl.complain(level);
+  return 0;
+}