diff --git a/lib/Makefile b/lib/Makefile
index b2265ef..a94b27d 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -23,8 +23,8 @@ PART2 = ft_itoa.c ft_strjoin.c ft_split.c ft_striteri.c ft_strmapi.c \
         ft_substr.c ft_strtrim.c ft_putchar_fd.c ft_putstr_fd.c ft_putendl_fd.c \
         ft_putnbr_fd.c
 
-BONUS = ft_lstnew.c ft_lstadd_front.c ft_lstsize.c ft_lstlast.c ft_lstadd_back.c \
-        ft_lstdelone.c ft_lstclear.c ft_lstiter.c ft_lstmap.c 
+BONUS = ft_lstnew_bonus.c ft_lstadd_front_bonus.c ft_lstsize_bonus.c ft_lstlast_bonus.c ft_lstadd_back_bonus.c \
+        ft_lstdelone_bonus.c ft_lstclear_bonus.c ft_lstiter_bonus.c ft_lstmap_bonus.c 
 
 SRC = ${PART1} ${PART2}
 
diff --git a/lib/ft_atoi.c b/lib/ft_atoi.c
index e90d0f6..c2f0c55 100644
--- a/lib/ft_atoi.c
+++ b/lib/ft_atoi.c
@@ -14,7 +14,7 @@
 //ft_isdigit(str[i]) returns boolean if is digit or not.
 #include "libft.h"
 
-int	ft_atoi(const char *str)
+int	ft_atoi(const char *nptr)
 {
 	int					i;
 	int					sign;
@@ -23,19 +23,19 @@ int	ft_atoi(const char *str)
 	i = 0;
 	sign = 1;
 	result = 0;
-	while (str[i] == 32 || (str[i] >= 9 && str[i] <= 13))
+	while (nptr[i] == 32 || (nptr[i] >= 9 && nptr[i] <= 13))
 		i++;
-	if (str[i] == '-')
+	if (nptr[i] == '-')
 	{
 		sign = -1;
 		i++;
 	}
-	else if (str[i] == '+')
+	else if (nptr[i] == '+')
 		i++;
-	while (ft_isdigit(str[i]))
+	while (ft_isdigit(nptr[i]))
 	{
 		result *= 10;
-		result += str[i] - '0';
+		result += nptr[i] - '0';
 		i++;
 	}
 	return (result * sign);
diff --git a/lib/ft_lstadd_back.c b/lib/ft_lstadd_back_bonus.c
similarity index 100%
rename from lib/ft_lstadd_back.c
rename to lib/ft_lstadd_back_bonus.c
diff --git a/lib/ft_lstadd_front.c b/lib/ft_lstadd_front_bonus.c
similarity index 100%
rename from lib/ft_lstadd_front.c
rename to lib/ft_lstadd_front_bonus.c
diff --git a/lib/ft_lstclear.c b/lib/ft_lstclear_bonus.c
similarity index 100%
rename from lib/ft_lstclear.c
rename to lib/ft_lstclear_bonus.c
diff --git a/lib/ft_lstdelone.c b/lib/ft_lstdelone_bonus.c
similarity index 100%
rename from lib/ft_lstdelone.c
rename to lib/ft_lstdelone_bonus.c
diff --git a/lib/ft_lstiter.c b/lib/ft_lstiter_bonus.c
similarity index 100%
rename from lib/ft_lstiter.c
rename to lib/ft_lstiter_bonus.c
diff --git a/lib/ft_lstlast.c b/lib/ft_lstlast_bonus.c
similarity index 100%
rename from lib/ft_lstlast.c
rename to lib/ft_lstlast_bonus.c
diff --git a/lib/ft_lstmap.c b/lib/ft_lstmap_bonus.c
similarity index 100%
rename from lib/ft_lstmap.c
rename to lib/ft_lstmap_bonus.c
diff --git a/lib/ft_lstnew.c b/lib/ft_lstnew_bonus.c
similarity index 100%
rename from lib/ft_lstnew.c
rename to lib/ft_lstnew_bonus.c
diff --git a/lib/ft_lstsize.c b/lib/ft_lstsize_bonus.c
similarity index 100%
rename from lib/ft_lstsize.c
rename to lib/ft_lstsize_bonus.c
diff --git a/lib/ft_strlcat.c b/lib/ft_strlcat.c
index 0d15ccb..bc8f676 100644
--- a/lib/ft_strlcat.c
+++ b/lib/ft_strlcat.c
@@ -22,7 +22,7 @@
 // :space had been available.
 #include "libft.h"
 
-size_t	ft_strlcat(char *dest, const char *src, size_t size)
+size_t	ft_strlcat(char *dst, const char *src, size_t size)
 {
 	size_t	i;
 	size_t	len_src;
@@ -32,18 +32,18 @@ size_t	ft_strlcat(char *dest, const char *src, size_t size)
 	i = 0;
 	str_result = 0;
 	len_src = ft_strlen(src);
-	len_dest = ft_strlen(dest);
+	len_dest = ft_strlen(dst);
 	if (size > len_dest)
 		str_result = len_src + len_dest;
 	else
 		return (len_src + size);
 	while (src[i] && (len_dest + 1) < size)
 	{
-		dest[len_dest] = src[i];
+		dst[len_dest] = src[i];
 		len_dest++;
 		i++;
 	}
-	dest[len_dest] = '\0';
+	dst[len_dest] = '\0';
 	return (str_result);
 }
 // int main(void)
diff --git a/lib/ft_strlcpy.c b/lib/ft_strlcpy.c
index 8c9f52a..3d16950 100644
--- a/lib/ft_strlcpy.c
+++ b/lib/ft_strlcpy.c
@@ -12,21 +12,21 @@
 
 /* The ft_strlcpy function copies up to dst size - 1 (we remove 1 because 
  * of the null-terminator)characters from the string src to dst,
- * NUL-terminating the result if dstsize is not 0.
+ * NUL-terminating the result if size is not 0.
  * It ensures that the resulting string will always be NUL-terminated.
  * The size of the source string is returned.
  * Return the size of the source string
  */
 #include "libft.h"
 
-size_t	ft_strlcpy(char *dst, const char *src, size_t dstsize)
+size_t	ft_strlcpy(char *dst, const char *src, size_t size)
 {
 	size_t	i;
 
 	i = 0;
-	if (dstsize > 0)
+	if (size > 0)
 	{
-		while (src[i] && i < dstsize - 1)
+		while (src[i] && i < size - 1)
 		{
 			dst[i] = src[i];
 			i++;