1 files changed, 37 insertions, 0 deletions
diff --git a/include/book_store/book_count.hh b/include/book_store/book_count.hh
new file mode 100644
index 0000000..a9c68c1
--- /dev/null
+++ b/include/book_store/book_count.hh
@@ -0,0 +1,37 @@
+#ifndef BOOK_COUNT_HH
+#define BOOK_COUNT_HH
+
+#include <ostream>
+#include <string>
+
+namespace book_store::product {
+class book_count {
+public:
+  using book_count_type = std::size_t;
+
+private:
+  book_count_type _count;
+
+public:
+  book_count() = default;
+  book_count(book_count_type count) : _count(count) {}
+
+  friend auto operator<<(std::ostream &output_stream, const book_count &price)
+      -> std::ostream & {
+    output_stream << price._count;
+
+    return output_stream;
+  }
+
+  friend auto operator==(const book_count &lhs, const book_count &rhs) -> bool {
+    return lhs._count == rhs._count;
+  }
+
+  friend auto operator+(const book_count &lhs, const book_count &rhs)
+      -> book_count {
+    return {lhs._count + rhs._count};
+  }
+};
+} // namespace book_store::product
+
+#endif // BOOK_COUNT_HH