Update Solution Exercise 5 - Farm.cpp

Part 1/4. Control structures/Solutions/Solution Exercise 5 - Farm.cpp

-#include <stdlib.h>
-#include <iostream>
-
 using namespace std;
 
 // Declaration of three global variables
-int number = 0;
-string type;
 int weight = 0;
 float dailyPrice = 0;
 float revenue = 0;
-bool inStock;
 
 // Prototypes
-void Create_Animal();
-void Show_Animal();
-void Sell_Animal();
-
-// Function to create
-void Create_Animal() {
-	cout << "Please type in the number of the animal: ";
-	cin >> number;
-	cout << endl;
-	cout << "Please type in the type of the animal: ";
-	cin >> type;
-	cout << endl;
-	cout << "Please type in the weight of the animal: ";
-	cin >> weight;
-	cout << endl;
-	inStock = true; //Tier ist im Bestand 
+void Data_query();
+void Calculate_revenue();
+void Data_output();
+
+// Function to input the weight and price
+void Data_query() {
+    cout << "What is the weight? " << endl;
+    cin >> weight;
+    cout << "What is the daily price? " << endl;
+    cin >> dailyPrice;
 }
 
-// Function to show the data
-void Show_Animal() {
-		cout << "Animal number: " << number << endl;
-		cout << "Animal type: " << type << endl;
-		cout << "Animal weight: " << weight << endl;
-		cout << "In stock? (1 = yes, 0 = no): " << inStock << endl;
+// Function to calculate the revenue
+// by multiplying weight & price
+void Calculate_revenue() {
+    revenue = weight * dailyPrice;
+    cout << "Revenue: " << revenue << endl;
 }
 
-//Function to sell
-void Sell_Animal(int nr)
-{
-	if(number == nr && inStock == 1)
-	{
-		cout << "What is the daily price?"<< endl;
-		cin >> dailyPrice;
-		revenue = revenue + (weight*dailyPrice);
-		cout << "Total revenue: " << revenue << endl;
-		inStock = false;
-		cout << endl << endl;
-	}
-	else if (number == nr && inStock == 0)
-	{
-		cout << "Animal with the number " << nr << " is in stock." << endl;
-	}
-	else
-	{
-		cout << "Animal with the number " << nr << " is not in stock." << endl;
-	}
-} ;
-
 int main() {
-    int s = 0, input, nr;  // declares integer s to zero, is used for the menu
+    int s = 0, input;  // declares integer s to zero, is used for the menu
 
     // do-while loop that outputs the menu and calls submenus
     do {
-        system("cls"); //Clears the screen for windows-systems. For unix, use system("clear"); - you can also omit it
-
         cout << "Welcome to the farm administration" << endl << endl << "Please make your selection in the menu...." << endl << endl << endl;
 
         // The menu
-        cout << "[1] Create animal" << endl;
-        cout << "[2] Show animal" << endl;
-		cout << "[3] Sell animal" << endl;
+        cout << "[1] Data query" << endl;
+        cout << "[2] Calculate revenue" << endl;
         cout << "[0] Exit" << endl << endl;
         cout << "Make a selection: ";
 
-        cin >> input;
-
-        // Switch loop calls the individual menu items
         switch (input) {
             case 1: {
                 system("cls");
-                Create_Animal();  // Function to create an animal
-                cout << "Animal has been created." << endl;
+                Data_query();  // Function to create an animal
+                cout << "Data has been typed in." << endl;
                 cin.ignore(); //In windows you can use alternatively system("pause");
                 cin.get();
                 break;
-            }
 
             case 2: {
                 system("cls");
-                Show_Animal();
+                Calculate_revenue();
                 cin.ignore();
                 cin.get();
                 break;
             }
 
-			case 3: {
-				system("cls");
-				cout << "Type in animal number: " << endl;
-				cin >> nr;
-				Sell_Animal(nr);
-				system("pause");
-				break;
-			}
-
             default: {
                 cout << "Wrong input!" << endl;
                 cin.ignore();