From bc6436c3da44f12394a1c4ff603634c2229f280a Mon Sep 17 00:00:00 2001
From: Yue Wang <Moophyalan@gmail.com>
Date: Wed, 21 Oct 2015 11:33:04 +1300
Subject: [PATCH] Update ex1_20.cpp

---
 ch01/ex1_20.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ch01/ex1_20.cpp b/ch01/ex1_20.cpp
index 72d43dda..2dadf85a 100644
--- a/ch01/ex1_20.cpp
+++ b/ch01/ex1_20.cpp
@@ -1,8 +1,12 @@
 #include <iostream>
 #include "include/Sales_item.h"
 
+using std::cin;
+using std::cout;
+using std::endl;
+
 int main()
 {
-    for (Sales_item item; std::cin >> item; std::cout << item << std::endl);
+    for (Sales_item item; cin >> item; cout << item << endl);
     return 0;
 }