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  1. //Maxwell Brewer                   CS1A                  Chapter 11, p. 647, #11
  2. //
  3. /*******************************************************************************
  4.  * MONTHLY BUDGET TRACKER
  5.  * _____________________________________________________________________________
  6.  * This program helps track monthly expenses by comparing the user’s actual 
  7.  * expenses against a predefined budget. It calculates whether the user is over 
  8.  * or under budget for various expense categories and prints the results.
  9.  * 
  10.  * INPUT:
  11.  *    - User’s monthly expenses for categories such as housing, utilities, etc.
  12.  * 
  13.  * OUTPUT:
  14.  *    - Over or under budget amounts for each category.
  15.  *    - Total monthly over or under budget amount.
  16.  *******************************************************************************/
  17.  
  18. #include <iostream>
  19. #include <cmath> // For abs()
  20. using namespace std;
  21.  
  22. // Structure to hold monthly expenses
  23. struct MonthlyExpenses {
  24.     double housing;
  25.     double utilities;
  26.     double household;
  27.     double transport;
  28.     double food;
  29.     double medical;
  30.     double insurance;
  31.     double entertainment;
  32.     double clothing;
  33.     double misc;
  34. };
  35.  
  36. // Function prototypes
  37. void getInputExpenses(MonthlyExpenses &expenses);
  38. void compareAndDisplayExpenses(const MonthlyExpenses &budget, const MonthlyExpenses &actual);
  39. double calculateDifference(double budgeted, double actual);
  40.  
  41. int main() {
  42.     // Predefined budget
  43.     MonthlyExpenses budget = {
  44.         500, 150, 65, 50, 250, 30, 100, 150, 75, 50
  45.     };
  46.  
  47.     // User's actual monthly expenses
  48.     MonthlyExpenses actualExpenses;
  49.  
  50.     // Input user expenses
  51.     cout << "Enter your expenses for the current month:\n";
  52.     getInputExpenses(actualExpenses);
  53.  
  54.     // Compare and display the results
  55.     cout << "\n\nBudget Comparison:\n";
  56.     cout << "-----------------------------------------\n";
  57.     compareAndDisplayExpenses(budget, actualExpenses);
  58.  
  59.     return 0;
  60. }
  61.  
  62. /**
  63.  * Reads user input for monthly expenses.
  64.  * 
  65.  * @param expenses Reference to a MonthlyExpenses structure to store user input.
  66.  */
  67. void getInputExpenses(MonthlyExpenses &expenses) {
  68.     cout << "Housing: ";
  69.     cin >> expenses.housing;
  70.  
  71.     cout << "Utilities: ";
  72.     cin >> expenses.utilities;
  73.  
  74.     cout << "Household: ";
  75.     cin >> expenses.household;
  76.  
  77.     cout << "Transport: ";
  78.     cin >> expenses.transport;
  79.  
  80.     cout << "Food: ";
  81.     cin >> expenses.food;
  82.  
  83.     cout << "Medical: ";
  84.     cin >> expenses.medical;
  85.  
  86.     cout << "Insurance: ";
  87.     cin >> expenses.insurance;
  88.  
  89.     cout << "Entertainment: ";
  90.     cin >> expenses.entertainment;
  91.  
  92.     cout << "Clothing: ";
  93.     cin >> expenses.clothing;
  94.  
  95.     cout << "Miscellaneous: ";
  96.     cin >> expenses.misc;
  97. }
  98.  
  99. /**
  100.  * Compares and displays budgeted versus actual expenses.
  101.  * 
  102.  * @param budget The predefined budget.
  103.  * @param actual The user's actual expenses.
  104.  */
  105. void compareAndDisplayExpenses(const MonthlyExpenses &budget, const MonthlyExpenses &actual) {
  106.     double totalDifference = 0;
  107.  
  108.     cout << "Housing: ";
  109.     totalDifference += calculateDifference(budget.housing, actual.housing);
  110.  
  111.     cout << "Utilities: ";
  112.     totalDifference += calculateDifference(budget.utilities, actual.utilities);
  113.  
  114.     cout << "Household: ";
  115.     totalDifference += calculateDifference(budget.household, actual.household);
  116.  
  117.     cout << "Transport: ";
  118.     totalDifference += calculateDifference(budget.transport, actual.transport);
  119.  
  120.     cout << "Food: ";
  121.     totalDifference += calculateDifference(budget.food, actual.food);
  122.  
  123.     cout << "Medical: ";
  124.     totalDifference += calculateDifference(budget.medical, actual.medical);
  125.  
  126.     cout << "Insurance: ";
  127.     totalDifference += calculateDifference(budget.insurance, actual.insurance);
  128.  
  129.     cout << "Entertainment: ";
  130.     totalDifference += calculateDifference(budget.entertainment, actual.entertainment);
  131.  
  132.     cout << "Clothing: ";
  133.     totalDifference += calculateDifference(budget.clothing, actual.clothing);
  134.  
  135.     cout << "Miscellaneous: ";
  136.     totalDifference += calculateDifference(budget.misc, actual.misc);
  137.  
  138.     // Display total over/under budget amount
  139.     cout << "\n-----------------------------------------\n";
  140.     cout << "Total Monthly Difference: ";
  141.     if (totalDifference > 0) {
  142.         cout << "+$" << totalDifference << " (Under Budget)\n";
  143.     } else if (totalDifference < 0) {
  144.         cout << "-$" << abs(totalDifference) << " (Over Budget)\n";
  145.     } else {
  146.         cout << "$0 (Exact Budget)\n";
  147.     }
  148. }
  149.  
  150. /**
  151.  * Calculates and prints the difference between budgeted and actual expenses.
  152.  * 
  153.  * @param budgeted The budgeted amount for a category.
  154.  * @param actual The actual amount spent for a category.
  155.  * @return The difference (budgeted - actual) as a double.
  156.  */
  157. double calculateDifference(double budgeted, double actual) {
  158.     double difference = budgeted - actual;
  159.  
  160.     if (difference > 0) {
  161.         cout << "+$" << difference << " (Under Budget)\n";
  162.     } else if (difference < 0) {
  163.         cout << "-$" << abs(difference) << " (Over Budget)\n";
  164.     } else {
  165.         cout << "$0 (Exact Budget)\n";
  166.     }
  167.  
  168.     return difference;
  169. }
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https://ideone.com/5qMS0W
Chapter 11, p. 647, #11
language:
C++ (gcc 8.3)
created:
17 hours ago
visibility:
public

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