diff --git a/0x11-singly_linked_lists/1-list_len.c b/0x11-singly_linked_lists/1-list_len.c
new file mode 100644
index 0000000..272302e
--- /dev/null
+++ b/0x11-singly_linked_lists/1-list_len.c
@@ -0,0 +1,15 @@
+#include "lists.h"
+/**
+ * list_len - counts all elements in a list_t list.
+ * @h: list to be counted.
+ * Return: returns number of items in list.
+ */
+size_t list_len(const list_t *h)
+{
+	int i;
+
+	for (i = 0; h != (NULL); h = h->next, i++)
+		;
+
+	return (i);
+}
diff --git a/0x11-singly_linked_lists/1-main.c b/0x11-singly_linked_lists/1-main.c
new file mode 100644
index 0000000..74c91f9
--- /dev/null
+++ b/0x11-singly_linked_lists/1-main.c
@@ -0,0 +1,34 @@
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "lists.h"
+
+/**
+ * main - check the code for Holberton School students.
+ *
+ * Return: Always 0.
+ */
+int main(void)
+{
+    list_t *head;
+    list_t *new;
+    list_t hello = {"World", 5, NULL};
+    size_t n;
+
+    head = &hello;
+    new = malloc(sizeof(list_t));
+    if (new == NULL)
+    {
+        printf("Error\n");
+        return (1);
+    }
+    new->str = strdup("Hello");
+    new->len = 5;
+    new->next = head;
+    head = new;
+    n = list_len(head);
+    printf("-> %lu elements\n", n);
+    free(new->str);
+    free(new);
+    return (0);
+}
diff --git a/0x11-singly_linked_lists/b b/0x11-singly_linked_lists/b
new file mode 100755
index 0000000..b23c8c3
Binary files /dev/null and b/0x11-singly_linked_lists/b differ
diff --git a/0x11-singly_linked_lists/lists.h b/0x11-singly_linked_lists/lists.h
index 0e05a36..43eacde 100644
--- a/0x11-singly_linked_lists/lists.h
+++ b/0x11-singly_linked_lists/lists.h
@@ -19,5 +19,6 @@ typedef struct list_s
 } list_t;
 
 size_t print_list(const list_t *h);
+size_t list_len(const list_t *h);
 
 #endif