From af6de4b7d44e81b39297740cbb0739d0e3f1bf45 Mon Sep 17 00:00:00 2001
From: Shezza221b <41204318+Shezza221b@users.noreply.github.com>
Date: Thu, 1 Oct 2020 19:04:03 +0530
Subject: [PATCH] Update stack.c (#617)

---
 data_structures/stack.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/data_structures/stack.c b/data_structures/stack.c
index 026ca525..0bae7c52 100644
--- a/data_structures/stack.c
+++ b/data_structures/stack.c
@@ -13,6 +13,9 @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // DATA STRUCTURES
+/**
+ * creating a stucture with 'data'(type:int), two pointers 'next','pre' (type: struct node) .
+ */
 struct node
 {
     int data;