1 files changed, 34 insertions, 0 deletions
diff --git a/7p13.cpp b/7p13.cpp
new file mode 100644
index 0000000..bfacb6a
--- /dev/null
+++ b/7p13.cpp
@@ -0,0 +1,34 @@
+#include <iostream>
+#include "sales_data.hpp"
+
+/*
+ *
+ * 7.13
+ *
+ *
+ */
+
+int main () {
+
+	SalesData total(std::cin);
+	if (std::cin) {
+		SalesData trans(std::cin);
+		while(std::cin) {
+			if (total.isbn() == trans.isbn())
+				total.combine(trans);
+			else {
+				print(std::cout, total) << std::endl;
+				total = trans;
+			}
+
+			read(std::cin, trans);
+		}
+		
+		print(std::cout, total) << std::endl;
+	} else {
+		std::cerr << "Error" << std::endl;
+		return -1;
+	}
+	
+	return 0;
+}