From c10638c9fb5ea1b98ebdb5005d466f09bde40f0f Mon Sep 17 00:00:00 2001
From: Steven Schronk <steven@schronk.com>
Date: Wed, 23 Dec 2009 01:36:32 -0600
Subject: [PATCH] Added tutorial 5-4. Compares chars at end of two arrays.

---
 ex_5-4.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 ex_5-4.c

diff --git a/ex_5-4.c b/ex_5-4.c
new file mode 100644
index 0000000..4da1d5c
--- /dev/null
+++ b/ex_5-4.c
@@ -0,0 +1,51 @@
+#include <stdio.h>
+
+/* strcmp - compare strings */
+/* return <0 is s < t; 0 if s==t; >0 if s>t */
+int strcmp(char *s, char *t)
+{
+	int i;
+	for(i = 0; s[i] == t[i]; i++)
+		;
+
+	return i; // might need to change
+}
+
+
+/* strlen - return length of string */
+int strlen_new(char *s)
+{
+	int n;
+	for(n =0; s[n] != '\0'; n++);
+	return n;
+}
+
+/* strend - compares end of string s with string t */
+/* return 1 if string t occurs and 0 otherwise */
+int strend(char *s, char *t)
+{
+	int ls, lt;
+	ls = strlen_new(s); // find length of s
+	lt = strlen_new(t); // find length of t
+
+	// start with end of s and move back comparing with end of t
+	while(lt >= 0)
+	{
+		if(s[ls] != t[lt]) { return 0; }
+		--ls;
+		--lt;
+	}
+	return 1;
+}
+
+
+int main()
+{
+	char s[] = { "1234567890" };
+	char t[] = { "67890" };
+
+	int ans = strend(s,t);
+	printf("%d\n", ans);
+
+	return 1;
+}
-- 
2.11.4.GIT