added main comment

netcalc.c

@@ -273,6 +273,9 @@ int client()
 	return 0;
 }
 
+/// The main method, starts depending on the args as client or server
+/// @param argc argument count
+/// @param argv array of options, -c for client followed by hostname and port
 int main(int argc, char *argv[])
 {
 	SOCKFD = 0;