diff --git a/d07/ex01/Makefile b/d07/ex01/Makefile
new file mode 100644
index 0000000..3136100
--- /dev/null
+++ b/d07/ex01/Makefile
@@ -0,0 +1,79 @@
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
+#               . name = value \          . += append to a variable   #
+#   VARIABLES   .        value            . != set result of command  #
+#               . name is case sensitive  . ?= set if not already set #
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
+
+NAME      = iter
+
+#TYPE      = c
+TYPE      = cpp
+
+ifeq "$(TYPE)" "c"
+  CC      = c
+  EXT     = c
+else ifeq "$(TYPE)" "cpp"
+  CC      = c++
+  EXT     = cpp
+endif
+
+CFLAGS    = -Wall -Wextra -Werror $(INCLUDES)
+ifeq "$(TYPE)" "cpp"
+  CFLAGS += -std=c++98
+endif
+
+VPATH     = $(D_SRCS)
+
+LIBS      =
+
+INCLUDES  = -I$(D_HEADERS)
+
+D_SRCS    = .
+SRCS      = main.cpp
+
+D_HEADERS = headers
+HEADERS   = colors.h \
+			Iter.hpp \
+			Print.hpp \
+			ToUpper.hpp \
+			Decrement.hpp
+
+D_OBJS    = builds
+OBJS      = $(SRCS:%.$(EXT)=$(D_OBJS)/%.o)
+
+ifeq "$(D_OBJS)" "."
+  RM_OBJS = rm -f $(OBJS)
+else
+  RM_OBJS = rm -rf $(D_OBJS)
+endif
+
+
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
+#             .   target: prerequisites   .   $@ : target             #
+#    RULES    .           recipe          .   $< : 1st prerequisite   #
+#             .           recipe          .   $^ : all prerequisites  #
+# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - #
+
+all: $(NAME)
+
+$(D_OBJS)/%.o: %.$(EXT) | $(D_OBJS)
+	$(CC) $(CFLAGS) -c $< -o $@
+
+$(D_OBJS):
+	mkdir $@
+
+$(OBJS): $(HEADERS:%=$(D_HEADERS)/%)
+
+$(NAME): $(OBJS)
+	$(CC) $(OBJS) -o $@ $(LIBS)
+
+clean:
+	$(RM_OBJS)
+
+fclean: clean
+	rm -f $(NAME)
+
+re: fclean all
+
+.PHONY : all clean fclean re
+
diff --git a/d07/ex01/headers/Decrement.hpp b/d07/ex01/headers/Decrement.hpp
new file mode 100644
index 0000000..5968ad4
--- /dev/null
+++ b/d07/ex01/headers/Decrement.hpp
@@ -0,0 +1,13 @@
+#ifndef DECREMENT_HPP
+# define DECREMENT_HPP
+
+# include <iostream>
+# include <string>
+
+template< typename T >
+void	Decrement(T & e) {
+	--e;;
+}
+
+#endif
+
diff --git a/d07/ex01/headers/Iter.hpp b/d07/ex01/headers/Iter.hpp
new file mode 100644
index 0000000..da5d402
--- /dev/null
+++ b/d07/ex01/headers/Iter.hpp
@@ -0,0 +1,11 @@
+#ifndef ITER_HPP
+# define ITER_HPP
+
+template< typename T, typename F >
+void	Iter(T *arr, size_t len, F & f)
+{
+	for (size_t i = 0;  i < len; i++)
+		f(arr[i]);
+}
+
+#endif
diff --git a/d07/ex01/headers/Print.hpp b/d07/ex01/headers/Print.hpp
new file mode 100644
index 0000000..31abe69
--- /dev/null
+++ b/d07/ex01/headers/Print.hpp
@@ -0,0 +1,13 @@
+#ifndef PRINT_HPP
+# define PRINT_HPP
+
+# include <iostream>
+# include <string>
+
+template< typename T >
+void	Print(T const & e) {
+	std::cout << "[" << e << "]\n";
+}
+
+#endif
+
diff --git a/d07/ex01/headers/ToUpper.hpp b/d07/ex01/headers/ToUpper.hpp
new file mode 100644
index 0000000..1a8d35b
--- /dev/null
+++ b/d07/ex01/headers/ToUpper.hpp
@@ -0,0 +1,14 @@
+#ifndef TOUPPER_HPP
+# define TOUPPER_HPP
+
+# include <iostream>
+# include <string>
+# include <cctype>
+
+template< typename T >
+void	ToUpper(T & e) {
+	e = toupper(e);
+}
+
+#endif
+
diff --git a/d07/ex01/headers/colors.h b/d07/ex01/headers/colors.h
new file mode 100644
index 0000000..0374e42
--- /dev/null
+++ b/d07/ex01/headers/colors.h
@@ -0,0 +1,25 @@
+#ifndef COLORS_H
+# define COLORS_H
+
+# define GRAY "\e[0;30m"
+# define RED "\e[0;31m"
+# define GREEN "\e[0;32m"
+# define YELLOW "\e[0;33m"
+# define BLUE "\e[0;34m"
+# define PURPLE "\e[0;35m"
+# define CYAN "\e[0;36m"
+# define WHITE "\e[0;37m"
+
+# define B_GRAY "\e[1;30m"
+# define B_RED "\e[1;31m"
+# define B_GREEN "\e[1;32m"
+# define B_YELLOW "\e[1;33m"
+# define B_BLUE "\e[1;34m"
+# define B_PURPLE "\e[1;35m"
+# define B_CYAN "\e[1;36m"
+# define B_WHITE "\e[1;37m"
+
+# define RESET "\e[0m"
+
+#endif
+
diff --git a/d07/ex01/main.cpp b/d07/ex01/main.cpp
new file mode 100644
index 0000000..945b374
--- /dev/null
+++ b/d07/ex01/main.cpp
@@ -0,0 +1,43 @@
+#include <iostream>
+#include <string>
+#include "colors.h"
+#include "Iter.hpp"
+#include "Print.hpp"
+#include "ToUpper.hpp"
+#include "Decrement.hpp"
+
+#define N_TEST "2"
+
+int	main() {
+	int	i = 0;
+
+	std::cout << B_YELLOW "\n[" << ++i << "/" N_TEST "] "
+	<< "tests char :" RESET "\n";
+	{
+		char	arr[] = "abracadabra";
+		size_t	len = sizeof(arr) / sizeof(arr[0]);
+		
+		::Iter(arr, len, Print<char>);
+		std::cout << B_BLUE "ToUpper :" RESET "\n";
+		::Iter(arr, len, ToUpper<char>);
+		::Iter(arr, len, Print<char>);
+		std::cout << B_BLUE "Decrement :" RESET "\n";
+		::Iter(arr, len, Decrement<char>);
+		::Iter(arr, len, Print<char>);
+	}
+
+	std::cout << B_YELLOW "\n[" << ++i << "/" N_TEST "] "
+	<< "tests int :" RESET "\n";
+	{
+		int		arr[] = {1256, 23, 4352, -3287, 0, 24, 4376382};
+		size_t	len = sizeof(arr) / sizeof(arr[0]);
+		
+		::Iter(arr, len, Print<int>);
+		std::cout << B_BLUE "Decrement :" RESET "\n";
+		::Iter(arr, len, Decrement<int>);
+		::Iter(arr, len, Print<int>);
+	}
+
+	return 0;
+}
+