Done!

Eisverkauf/Eisverkauf.cpp

@@ -1,35 +1,85 @@
-// Eisverkauf.cpp : Diese Datei enthält die Funktion "main". Hier beginnt und endet die Ausführung des Programms.
-//
-
-#include "pch.h"
 #include <iostream>
+#include <vector>
 
 using namespace std;
 
-void Greeting();
-
-double GetPrice(int index);
+void greeting();
+double order(vector<const char*> persons, double available_money);
+void billing(double change, double available_money);
+double get_price(int index);
 
+/**
+ * \brief ice cream sale
+ * \return zero if successful.
+ */
 int main()
 {
-	double 
-	Greeting();
-	
+	const auto persons = {"Freund 1", "Freund 2", "Du"};
+	const auto available_money = 5.0;
+
+	greeting();
+	const auto change = order(persons, available_money);
+	billing(change, available_money);
+	return 0;
 }
 
-void Greeting()
+/**
+ * \brief Writes a greeting message.
+ */
+void greeting()
 {
 	cout << "Hallo!" << endl;
 	cout << "Folgende Eissorten sind vorhanden:" << endl;
-	cout << "1. Capri: 1,10 €" << endl;
-	cout << "2. Nogger: 1,60 €" << endl;
-	cout << "3. Cornetto : 2,30 €" << endl;
-	
-
+	cout << "1. Capri: 1,10 Euro" << endl;
+	cout << "2. Nogger: 1,60 Euro" << endl;
+	cout << "3. Cornetto : 2,30 Euro" << endl;
+	cout << endl;
 }
 
+/**
+ * \brief Take an order and pay attention to the available money.
+ * \param persons The people at the counter 
+ * \param available_money Available money
+ * \return Remaining money.
+ */
+double order(vector<const char*> persons, double available_money)
+{
+	for (auto person : persons)
+	{
+		cout << "Hallo " << person << "!" << endl;
+		if (available_money < 1.1)
+		{
+			cout << "Sie koennen kein Eis mehr kaufen." << endl;
+			break;
+		}
+		cout << "Bitte geben Sie ihre Bestellung auf (1-3): ";
+		int input;
+		cin >> input;
+		available_money -= get_price(input);
+	}
+	return available_money;
+}
 
-double GetPrice(int index)
+/**
+ * \brief Creates the bill and returns the change
+ * \param change The remaining money
+ * \param available_money The payed money.
+ */
+void billing(const double change, const double available_money)
+{
+	cout << endl;
+	cout << "Zu zahlender Betrag: " << available_money - change << " Euro" << endl;
+	cout << "Ihr Restgeld betraegt: " << change << " Euro" << endl;
+	cout << endl;
+	cout << "Danke, beehren sie uns bald wieder!";
+}
+
+/**
+ * \brief get prices of chosen product.
+ * \param index of the product.
+ * \return the price of the product.
+ */
+double get_price(const int index)
 {
 	switch (index)
 	{

Eisverkauf/Eisverkauf.vcxproj

@@ -84,7 +84,7 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
-      <PrecompiledHeader>Use</PrecompiledHeader>
+      <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <Optimization>Disabled</Optimization>
       <SDLCheck>true</SDLCheck>