Added include guards

easysock.h

@@ -1,7 +1,13 @@
+#ifndef EASYSOCK_H_
+#define EASYSOCK_H_
+
 #include <string.h>
 #include <sys/socket.h>
 #include <arpa/inet.h>
 #include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+
 
 /* This function takes:
 a layer 3 - network layer - integer, which must be '4' for IPv4
@@ -41,4 +47,8 @@ requested address. It is used for remoet sockets (client sockets). The paramters
 as above.
 
 It prints the error returned by 'connect' if something went wrong, and exits with error code '-3'.*/
+
 int create_remote (int network,char transport,char* address,int port);
+
+
+#endif