--- src/nnwork.cc.orig	Sat Jan 17 17:30:41 2004
+++ src/nnwork.cc	Sat Jan 17 17:31:00 2004
@@ -29,6 +29,7 @@
 #include <fstream>
 #include <cassert>
 #include <cstring>
+#include <stdio.h>
 
 // This class implements a simple three-layer backpropagation network.