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  1. //Sam Partovi                          CS1A                   Ch. 11, P.648, #13
  2. /*******************************************************************************
  3. * SIMULATE DRINK MACHINE
  4. * ____________________________________________________________
  5. * This program simulates a drink vending machine that accepts drink choice and
  6. * money given to the machine.
  7. * ____________________________________________________________
  8. *INPUT
  9. * name          : Drink name
  10. * cost          : Cost of drink
  11. * numInMachine  : Drink quantity in stock
  12. * moneyInserted : Money given to machine
  13. *OUTPUT
  14. * Menus that allow for selection and purchase of drinks
  15. *******************************************************************************/
  16. #include <iostream>
  17. #include <iomanip>
  18. #include <string>
  19.  
  20. using namespace std;
  21.  
  22. // Structure definition for Drink
  23. struct Drink {
  24.     string name;
  25.     double cost;
  26.     int numInMachine;
  27. };
  28.  
  29. // Function to display the drink menu
  30. void displayMenu(Drink drinks[], int size) {
  31.     cout << "Available Drinks:" << endl;
  32.     for (int i = 0; i < size; i++) {
  33.         cout << i + 1 << ". " << drinks[i].name << " - $" << fixed << 
  34.                 setprecision(2) << drinks[i].cost;
  35.         if (drinks[i].numInMachine == 0)
  36.             cout << " (Sold Out)";
  37.         cout << endl;
  38.     }
  39.     cout << "99. Quit and Display Machine Earnings" << endl;
  40. }
  41.  
  42. // Main function
  43. int main() {
  44.     // Array of 5 drinks
  45.     Drink drinks[5] = {
  46.         {"Cola", 0.75, 20},
  47.         {"Root Beer", 0.75, 20},
  48.         {"Lemon-Lime", 0.75, 20},
  49.         {"Grape Soda", 0.80, 20},
  50.         {"Cream Soda", 0.80, 20}
  51.     };
  52.  
  53.     int choice;
  54.     double moneyInserted;
  55.  
  56.     do {
  57.         displayMenu(drinks, 5);
  58.  
  59.         cout << "Select a drink (1-5) or type 99 to quit: ";
  60.         cin >> choice;
  61.  
  62.         if (choice >= 1 && choice <= 5) {
  63.             if (drinks[choice - 1].numInMachine == 0) {
  64.                 cout << "Sorry, " << drinks[choice - 1].name << 
  65.                         " is sold out." << endl;
  66.                 continue; // Skip the rest of the loop for this iteration
  67.             }
  68.  
  69.             // Get money from user
  70.             do {
  71.                 cout << "Insert money ($0 to $1): ";
  72.                 cin >> moneyInserted;
  73.  
  74.                 if (moneyInserted < 0 || moneyInserted > 1) {
  75.                     cout << "Invalid amount. Please insert money between $0 and" 
  76.                             "$1." << endl;
  77.                 }
  78.             } while (moneyInserted < 0 || moneyInserted > 1);
  79.  
  80.             if (moneyInserted >= drinks[choice - 1].cost) {
  81.                 double change = moneyInserted - drinks[choice - 1].cost;
  82.                 cout << "Dispensing " << drinks[choice - 1].name << ". Your "
  83.                 "change is $" << fixed << setprecision(2) << change << endl;
  84.                 drinks[choice - 1].numInMachine--;
  85.             } else {
  86.                 cout << "Not enough money inserted. Returning $" << fixed << 
  87.                         setprecision(2) << moneyInserted << endl;
  88.             }
  89.         } else if (choice != 99) {
  90.             cout << "Invalid selection! Please select a valid option." << endl;
  91.         }
  92.  
  93.     } while (choice != 99); // End of the main loop
  94.  
  95.     return 0;
  96. }
  97.  
  98.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
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1
0.85
5
1
2
0.30
99
stdout
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Available Drinks:
1. Cola - $0.75
2. Root Beer - $0.75
3. Lemon-Lime - $0.75
4. Grape Soda - $0.80
5. Cream Soda - $0.80
99. Quit and Display Machine Earnings
Select a drink (1-5) or type 99 to quit: Insert money ($0 to $1): Dispensing Cola. Your change is $0.10
Available Drinks:
1. Cola - $0.75
2. Root Beer - $0.75
3. Lemon-Lime - $0.75
4. Grape Soda - $0.80
5. Cream Soda - $0.80
99. Quit and Display Machine Earnings
Select a drink (1-5) or type 99 to quit: Insert money ($0 to $1): Dispensing Cream Soda. Your change is $0.20
Available Drinks:
1. Cola - $0.75
2. Root Beer - $0.75
3. Lemon-Lime - $0.75
4. Grape Soda - $0.80
5. Cream Soda - $0.80
99. Quit and Display Machine Earnings
Select a drink (1-5) or type 99 to quit: Insert money ($0 to $1): Not enough money inserted. Returning $0.30
Available Drinks:
1. Cola - $0.75
2. Root Beer - $0.75
3. Lemon-Lime - $0.75
4. Grape Soda - $0.80
5. Cream Soda - $0.80
99. Quit and Display Machine Earnings
Select a drink (1-5) or type 99 to quit:
https://ideone.com/7aXzsT
chapter 11 #13
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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