6 files changed, 109 insertions, 1 deletions
diff --git a/7p2.cpp b/7p2.cpp
new file mode 100644
index 0000000..91ad659
--- /dev/null
+++ b/7p2.cpp
@@ -0,0 +1,11 @@
+
+/*
+ *
+ * 7.2
+ *
+ * In sales_data.hpp
+ */
+
+int main () {
+	return 0;
+}
diff --git a/7p3.cpp b/7p3.cpp
new file mode 100644
index 0000000..eee5db3
--- /dev/null
+++ b/7p3.cpp
@@ -0,0 +1,36 @@
+#include <iostream>
+#include "sales_data.hpp"
+
+/*
+ *
+ * 7.3
+ *
+ * This exercise is not correct and honestly i am not sure
+ * what is supposed to be correct. It may be because i misunderstood
+ * The exercise back in the 1.24 exercise.
+ *
+ * I have modified this program now to be more like i think it should be.
+ */
+
+int main () {
+
+	
+	SalesData CurItem;	
+	if(std::cin >> CurItem.BookNo >> CurItem.UnitsSold >> CurItem.Revenue) {
+		SalesData Item;
+		while(std::cin >> Item.BookNo >> Item.UnitsSold >> Item.Revenue) {
+			if(Item.isbn() == CurItem.isbn()) {
+				CurItem.combine(Item);
+			} else {
+				std::cout << "ISBN: " << CurItem.BookNo << " has " << CurItem.UnitsSold << " units sold"
+						  << " and a revenue of: " << CurItem.Revenue << std::endl;
+				CurItem = Item;
+			}
+		}
+		
+		std::cout << "ISBN: " << CurItem.BookNo << " has " << CurItem.UnitsSold << " units sold"
+						  << " and a revenue of: " << CurItem.Revenue << std::endl;
+	}
+
+	return 0;
+}
diff --git a/7p4.cpp b/7p4.cpp
new file mode 100644
index 0000000..95ab27e
--- /dev/null
+++ b/7p4.cpp
@@ -0,0 +1,13 @@
+
+/*
+ *
+ * 7.4
+ *
+ * Done in person.hpp
+ */
+
+int main () {
+
+	
+	return 0;
+}
diff --git a/7p5.cpp b/7p5.cpp
new file mode 100644
index 0000000..8c65760
--- /dev/null
+++ b/7p5.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include "person.hpp"
+
+/*
+ *
+ * 7.5
+ *
+ * Done in person.hpp
+ * We aren't changing the object or anything so const is okay
+ */
+
+int main () {
+
+	Person person1;
+	person1.Name = "John Doe";
+	person1.Address = "Unknown Street 20";
+	std::cout << person1.GetName() << std::endl;
+	std::cout << person1.GetAddress() << std::endl;
+	return 0;
+}
diff --git a/person.hpp b/person.hpp
new file mode 100644
index 0000000..66ec7f0
--- /dev/null
+++ b/person.hpp
@@ -0,0 +1,12 @@
+#ifndef PERSON_H
+#define PERSON_H
+#include <string>
+
+struct Person {
+	std::string Name;
+	std::string Address;
+	std::string GetAddress() const { return Address; }
+	std::string GetName() const { return Name; }
+};
+
+#endif
diff --git a/sales_data.hpp b/sales_data.hpp
index 31929af..7cb3022 100644
--- a/sales_data.hpp
+++ b/sales_data.hpp
@@ -3,14 +3,30 @@
 #include <string>
 struct SalesData {
 	std::string isbn() const { return BookNo; }
-	SalesData &combine(const SalesData);
+	SalesData &combine(const SalesData&);
 	double avg_price() const;
 	std::string BookNo;
 	unsigned int UnitsSold = 0;
 	double Revenue = 0.0;
 };
 
+double SalesData::avg_price() const {
+
+	if (UnitsSold)
+		return Revenue / UnitsSold;
+	else
+		return 0;
+}
+
+SalesData& SalesData::combine(const SalesData &rhs) {
+
+	UnitsSold += rhs.UnitsSold;
+	Revenue += rhs.Revenue;
+	return *this;
+}
+
 SalesData add(const SalesData&, const SalesData&);
 std::ostream &print(std::ostream&, const SalesData&);
 std::istream &read(std::istream&, SalesData&);
+
 #endif