tweak answer

Author: fsaadatmand

chapter05/5-4.c

@@ -1,6 +1,7 @@
 /*
  * Exercise 5-4. Write the function strend(s, t), which returns 1 if string t
  * occurs at the end of the string s, and zero otherwise.
+ *
  * By Faisal Saadatmand
  */
 
@@ -13,13 +14,11 @@ int strend(char *, char *);
 /* strend: returns 1 if t occurs at the end of s, and zero otherwise */
 int strend(char *s, char *t)
 {
-	unsigned slen, tlen;
-
-	if ((slen = strlen(s)) >= (tlen = strlen(t)))  /* check s's boundaries */
-		for (s += slen - tlen; *s == *t; s++, t++)
-			if (*s == '\0')
-				return 1;              /* ends match */
-	return 0;
+	s += strlen(s) - strlen(t); /* advance the pointer */
+	while (*s && *t)
+		if (*s++ != *t++)
+			return 0;;
+	return 1;
 }
 
 int main(void)