Fixed #658

avoid the meaningless"0 0 0" output.
Mooophy · May 9, 2018 · 644b87e · 644b87e
1 parent 55da3c7
commit 644b87e
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/ch07/ex7_13.cpp b/ch07/ex7_13.cpp
@@ -15,6 +15,7 @@ int main()
         std::istream &is = std::cin;
         while (is) {
             Sales_data trans(is);
+            if (!is) break;
             if (total.isbn() == trans.isbn())
                 total.combine(trans);
             else {