From b46c49228497cb440467167bad3123c327bd620f Mon Sep 17 00:00:00 2001
From: Steve Lee <me@xiangyangli.com>
Date: Tue, 17 Oct 2017 00:12:32 +0800
Subject: add

---
 data_structures/chapter_3/stack.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 data_structures/chapter_3/stack.h

(limited to 'data_structures/chapter_3/stack.h')

diff --git a/data_structures/chapter_3/stack.h b/data_structures/chapter_3/stack.h
new file mode 100644
index 0000000..f93c467
--- /dev/null
+++ b/data_structures/chapter_3/stack.h
@@ -0,0 +1,16 @@
+#ifndef _STACK_H
+
+struct node;
+typedef struct node *ptr_to_node;
+typedef ptr_to_node stack;
+typedef int elem;
+
+int is_empty(stack s);
+stack create_stack();
+void dispose_stack(stack s);
+void make_empty(stack s);
+void push(elem x, stack s);
+elem top(stack s);
+void pop(stack s);
+
+#endif
-- 
cgit v1.2.3