Added include guards to header files

includes/client.hpp

@@ -1,7 +1,10 @@
-#include "sock.hpp"
+#ifndef _CLIENT_H
+#define _CLIENT_H
+
+#include "includes/sock.hpp"
+#include "includes/exception_consts.hpp"
 /*
-Client class - Defines a TCP/UDP client.
-- The constructor takes in a **remote** address and port, and connects the client to that address/port.
+Client class - Inherits from 'Sock' class - Defines a TCP/UDP client. The only method that is overriden is the 'create_socket' method.
 */
 
 class Client : public Sock {
@@ -25,3 +28,4 @@ public:
 
 /* TODO - Add comments to better explain the inheritance and polymorphism going on */
 };
+#endif