diff --git a/Makefile b/Makefile
index 079c626..e725a23 100644
--- a/Makefile
+++ b/Makefile
@@ -30,6 +30,7 @@ SRCS	=	ft_memset.c \
 			ft_tolower.c \
 			ft_strchr.c \
 			ft_strrchr.c \
+			ft_strchrset.c \
 			ft_strncmp.c \
 			ft_strlcpy.c \
 			ft_strlcat.c \
diff --git a/libft.h b/libft.h
index de5dcca..931dc8a 100644
--- a/libft.h
+++ b/libft.h
@@ -6,7 +6,7 @@
 /*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/11/25 14:45:53 by hulamy            #+#    #+#             */
-/*   Updated: 2019/11/26 18:46:22 by hulamy           ###   ########.fr       */
+/*   Updated: 2020/02/16 15:10:37 by hulamy           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -33,6 +33,7 @@ int					ft_toupper(int c);
 int					ft_tolower(int c);
 char				*ft_strchr(const char *s, int c);
 char				*ft_strrchr(const char *s, int c);
+int					ft_strchrset(char *s, char *set);
 int					ft_strncmp(const char *s1, const char *s2, size_t n);
 size_t				ft_strlcpy(char *dst, const char *src, size_t size);
 size_t				ft_strlcat(char *dst, const char *src, size_t size);
diff --git a/srcs/ft_strchrset.c b/srcs/ft_strchrset.c
new file mode 100644
index 0000000..624e87f
--- /dev/null
+++ b/srcs/ft_strchrset.c
@@ -0,0 +1,32 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_strchrset.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/16 15:07:11 by hulamy            #+#    #+#             */
+/*   Updated: 2020/02/16 15:12:03 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+** return 1 if any character of the character set is found in s
+** else return 0
+*/
+
+#include "libft.h"
+
+int		ft_strchrset(char *s, char *set)
+{
+	int		i;
+
+	i = 0;
+	while (set[i] != '\0')
+	{
+		if (ft_strchr(s, set[i]) != NULL)
+			return (1);
+		i++;
+	}
+	return (0);
+}