assigning back and forth between char arrays

ex10.c

@@ -3,17 +3,31 @@
 int main(int argc, char *argv[])
 {
     int i = 0;
-
-    for(i = 0; i < argc; i++) {
-        printf("arg %d: %s\n", i, argv[i]);
-    }
-
     char *states[] = {
         "California", "Oregon",
         "Washington", "Texas"
     };
     int num_states = 4;
 
+    char *tmp = states[0];
+    states[0] = argv[0];
+    argv[0] = tmp;
+
+    for(i = 0; i < argc; i++) {
+        printf("arg %d: %s\n", i, argv[i]);
+    }
+
+    for(i = 0; i < num_states; i++) {
+        printf("state %d: %s\n", i, states[i]);
+    }
+
+    argv[0] = states[0];
+    states[0] = tmp;
+
+    for(i = 0; i < argc; i++) {
+        printf("arg %d: %s\n", i, argv[i]);
+    }
+
     for(i = 0; i < num_states; i++) {
         printf("state %d: %s\n", i, states[i]);
     }