using strlen and strncpy to make copies of strings instead of just copying pointers, although the need for (char *) makes me think I don't have the right idea

ex11.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <string.h>
 
 int main(int argc, char *argv[])
 {
@@ -21,11 +22,20 @@ int main(int argc, char *argv[])
     }
 
     i = 0;
+    size_t l;
+
     while(i < num_states) {
-        states[i] = argv[i];
+        l = strlen((char *)&(argv[i]));
+        strncpy((char *)&(states[i]), (char *)&(argv[i]), l);
         printf("copied %s into state %d\n", states[i], i);
         i++;
     }
 
+    i = 0;
+    while(i < num_states) {
+        printf("state %d: %s\n", i, states[i]);
+        i++;
+    }
+
     return 0;
 }