Finished Exercise 4-1

ch_04/exercise_04-01/kstrindex.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+
+#include "kstrindex.h"
+
+
+int KStrIndex_strindex(char s[], char t[])
+{
+    // Defaults to negative
+    int result = -1;
+    int i = 0, k = 0;
+    int j = 0;
+
+    for (i = 0; s[i] != '\0'; ++i)
+    {
+        for (j = i, k = 0; t[k] != '\0'; ++j, ++k)
+        {
+            if (s[j] != t[k])
+            {
+                break;
+            }
+        }
+
+        // Found starting index of t in s. As the look continues,
+        // there is a check to see if the string matches. This
+        // ensures that the right-most index is found.
+        if (k > 0 && t[k] == '\0')
+        {
+            result = i;
+        }
+    }
+
+
+    return result;
+}