structure, layout, parser and its modules

goods/goods.cpp

@@ -0,0 +1,26 @@
+#include "goods.h"
+#include <string>
+
+Goods::Goods(std::string name, double quantity, double price_per_unit) {
+    this->name = name;
+    this->quantity = quantity;
+    this->price_per_unit = price_per_unit;
+}
+
+double Goods::calculate_total_price() {
+    return this->price_per_unit * this->quantity;
+}
+
+std::string Goods::get_name() { return this->name; }
+
+double Goods::get_quantity() { return this->quantity; }
+
+double Goods::get_price_per_unit() { return this->price_per_unit; }
+
+void Goods::set_name(std::string name) { this->name = name; }
+
+void Goods::set_quantity(double quantity) { this->quantity = quantity; }
+
+void Goods::set_price_per_unit(double price_per_unit) {
+    this->price_per_unit = price_per_unit;
+}

goods/goods.h

@@ -0,0 +1,24 @@
+#ifndef GOODS_H
+#define GOODS_H
+
+#include <string>
+
+class Goods
+{
+    std::string name;
+    double quantity; // by weight or by the piece
+    double price_per_unit;
+public:
+    Goods(std::string, double, double);
+    double calculate_total_price();
+
+    std::string get_name();
+    double get_quantity();
+    double get_price_per_unit();
+
+    void set_name(std::string);
+    void set_quantity(double);
+    void set_price_per_unit(double);
+};
+
+#endif // GOODS_H