From c3cf173d30db6cff2561696a46abfcdef538bf71 Mon Sep 17 00:00:00 2001
From: Steve Lee <me@xiangyangli.com>
Date: Sat, 2 Dec 2017 06:03:52 +0800
Subject: category

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

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

diff --git a/Computer_Science/data_structures/chapter_3/stack.h b/Computer_Science/data_structures/chapter_3/stack.h
new file mode 100644
index 0000000..f93c467
--- /dev/null
+++ b/Computer_Science/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
-- 
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