From d71f18d52efe8efca773209724a994311b0634e5 Mon Sep 17 00:00:00 2001
From: "Ryan@WorkStation" <rtang@fsu.edu>
Date: Thu, 13 Oct 2022 13:01:12 -0400
Subject: [PATCH] add preprocessor for Qk.h

---
 Qk.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Qk.h b/Qk.h
index 326a342..6733693 100644
--- a/Qk.h
+++ b/Qk.h
@@ -1,3 +1,8 @@
+#ifndef QK_H
+#define QK_H
+
+#include <cstdio>
+
 double TauCal(double Energy_MeV){
 
   double E_log = log(Energy_MeV);
@@ -247,3 +252,5 @@ double QK2(double Energy, double radius, double distance, double thickness){
   */
   return QD2;
 }
+
+#endif