diff --git a/ft_isascii.c b/ft_isascii.c
new file mode 100644
index 0000000..a7037b7
--- /dev/null
+++ b/ft_isascii.c
@@ -0,0 +1,4 @@
+int	ft_isascii(int c)
+{
+	return (c >= 0 && c <= 127);
+}
\ No newline at end of file
diff --git a/libft.h b/libft.h
index 5d08a00..69ae0d3 100644
--- a/libft.h
+++ b/libft.h
@@ -1,3 +1,4 @@
 int	ft_isalpha(const char c);
 int	ft_isdigit(int c);
 int ft_isalnum(int c);
+int	ft_isascii(int c);