feat(ex03): it works

ex03/.gitignore

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+ex03

ex03/HumanA.cpp

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+#include "HumanA.hpp"
+#include <iostream>
+
+HumanA::HumanA(std::string name, Weapon &weapon) : weapon(weapon), name(name) {}
+
+void HumanA::attack(void) {
+  std::cout << name << " attacks with their " << weapon.getType() << std::endl;
+}

ex03/HumanA.hpp

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+#ifndef HUMANA_HPP
+#define HUMANA_HPP
+
+#include "Weapon.hpp"
+
+class HumanA {
+public:
+  HumanA(std::string name, Weapon &weapon);
+
+  void attack(void);
+
+private:
+  Weapon &weapon;
+  std::string name;
+};
+
+#endif

ex03/HumanB.cpp

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+#include "HumanB.hpp"
+#include <iostream>
+
+HumanB::HumanB(std::string name) : name(name) { this->weapon = NULL; }
+
+void HumanB::setWeapon(Weapon &weapon) { this->weapon = &weapon; }
+
+void HumanB::attack(void) {
+  std::string weaponType;
+  if (weapon != NULL)
+    weaponType = weapon->getType();
+  else
+    weaponType = "hands";
+  std::cout << name << " attacks with their " << weaponType << std::endl;
+}

ex03/HumanB.hpp

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+#ifndef HUMANB_HPP
+#define HUMANB_HPP
+
+#include "Weapon.hpp"
+class HumanB {
+public:
+  HumanB(std::string name);
+
+  void setWeapon(Weapon &weapon);
+
+  void attack(void);
+
+private:
+  Weapon *weapon;
+  std::string name;
+};
+
+#endif

ex03/Makefile

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+NAME = ex03
+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 = \
+	Weapon.cpp \
+	HumanA.cpp \
+	HumanB.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

ex03/Weapon.cpp

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+#include "Weapon.hpp"
+
+Weapon::Weapon(std::string type) { this->type = type; }
+
+const std::string &Weapon::getType(void) {
+  const std::string &retvalue = type;
+  return retvalue;
+}
+
+void Weapon::setType(std::string type) { this->type = type; }

ex03/Weapon.hpp

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+#ifndef WEAPON_HPP
+#define WEAPON_HPP
+
+#include <string>
+
+class Weapon {
+public:
+  Weapon(std::string type);
+
+  const std::string &getType(void);
+  void setType(std::string type);
+
+private:
+  std::string type;
+};
+
+#endif

ex03/main.cpp

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+#include "HumanA.hpp"
+#include "HumanB.hpp"
+#include "Weapon.hpp"
+
+int main() {
+  {
+    Weapon club = Weapon("crude spiked club");
+    HumanA bob("Bob", club);
+    bob.attack();
+    club.setType("some other type of club");
+    bob.attack();
+  }
+  {
+    Weapon club = Weapon("crude spiked club");
+    HumanB jim("Jim");
+    jim.setWeapon(club);
+    jim.attack();
+    club.setType("some other type of club");
+    jim.attack();
+  }
+  {
+    HumanB john("John");
+    john.attack();
+  }
+  return 0;
+}