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  1. //Sam Partovi                          CS1A                    Ch. 11, P.647, #9
  2. /*******************************************************************************
  3. * STORE SPEAKER DATA
  4. * ____________________________________________________________
  5. * This program accepts and stores specified data for a speaker bureau, and 
  6. * allows for modification of the stored data.
  7. * ____________________________________________________________
  8. *INPUT
  9. * name  : Speaker name
  10. * phone : Speaker phone number
  11. * topic : Speaking topic
  12. * fee   : Speaker fee
  13. * MAX_SPEAKERS : Maximum number of speakers
  14. *OUTPUT
  15. * Menus that allow for modification and addition of speakers
  16. *******************************************************************************/
  17. #include <iostream>
  18. #include <string>
  19. #include <iomanip>
  20. using namespace std;
  21.  
  22. // Structure for speaker database
  23. struct Speaker {
  24.     string name;      //INPUT - Speaker name
  25.     int phone;       //INPUT - Speaker phone number
  26.     string topic;   //INPUT - Speaking topic
  27.     float fee;     //INPUT - Speaker fee
  28. };
  29.  
  30. // Function prototypes
  31. void DisplayMenu();
  32. void AddSpeaker(Speaker* database, int& count);
  33. void ModifySpeaker(Speaker* database, int count);
  34. void ShowSpeakers(const Speaker* database, int count);
  35. void ValidateFee(float& fee);
  36.  
  37. const int MAX_SPEAKERS = 10;
  38.  
  39. int main() {
  40.     Speaker database[MAX_SPEAKERS];
  41.     int count = 0;
  42.     int choice;
  43.  
  44.     do {
  45.         DisplayMenu();
  46.         cin >> choice;
  47.  
  48.         switch (choice) {
  49.             case 1:
  50.                 if (count < MAX_SPEAKERS) {
  51.                     AddSpeaker(database, count);
  52.                 } else {
  53.                     cout << "\nError: Speaker database is full.\n";
  54.                 }
  55.                 break;
  56.             case 2:
  57.                 if (count > 0) {
  58.                     ModifySpeaker(database, count);
  59.                 } else {
  60.                     cout << "\nError: No speakers to modify.\n";
  61.                 }
  62.                 break;
  63.             case 3:
  64.                 if (count > 0) {
  65.                     ShowSpeakers(database, count);
  66.                 } else {
  67.                     cout << "\nError: No speakers to display.\n";
  68.                 }
  69.                 break;
  70.             case 4:
  71.                 cout << "Exiting the program.\n";
  72.                 break;
  73.             default:
  74.                 cout << "Error: Please select an option (1-4).\n";
  75.         }
  76.     } while (choice != 4);
  77.  
  78.     return 0;
  79. }
  80.  
  81. /*******************************************************************************
  82.  * DisplayMenu
  83.  * Displays the menu options for the user.
  84.  *******************************************************************************/
  85. void DisplayMenu() {
  86.     cout << "\nSpeaker Bureau Database";
  87.     cout << "\n--------------------------";
  88.     cout << "\n1. Add a speaker";
  89.     cout << "\n2. Modify a speaker";
  90.     cout << "\n3. Show all speakers";
  91.     cout << "\n4. Exit the program";
  92.     cout << "\nEnter your choice: ";
  93. }
  94.  
  95. /*******************************************************************************
  96.  * AddSpeaker
  97.  * Adds a new speaker to the database.
  98.  *******************************************************************************/
  99. void AddSpeaker(Speaker* database, int& count) {
  100.     cin.ignore(); // Clear newline from previous input
  101.     cout << "\nEnter details for speaker #" << count + 1 << ":\n";
  102.  
  103.     // Input name
  104.     cout << "Name: ";
  105.     getline(cin, database[count].name);
  106.  
  107.     // Input phone number
  108.     cout << "Phone number: ";
  109.     cin >> database[count].phone;
  110.  
  111.     cin.ignore(); // Clear newline from previous input
  112.  
  113.     // Input speaking topic
  114.     cout << "Speaking topic: ";
  115.     getline(cin, database[count].topic);
  116.  
  117.     // Input fee and validate
  118.     cout << "Fee: ";
  119.     cin >> database[count].fee;
  120.     ValidateFee(database[count].fee);
  121.  
  122.     // Increment count
  123.     count++;
  124. }
  125.  
  126. /*******************************************************************************
  127.  * ModifySpeaker
  128.  * Modifies the details of an existing speaker.
  129.  *******************************************************************************/
  130. void ModifySpeaker(Speaker* database, int count) {
  131.     int index;
  132.  
  133.     // Get speaker index to modify
  134.     cout << "\nEnter the index of the speaker to modify (1-" << count << "): ";
  135.     cin >> index;
  136.  
  137.     if (index < 1 || index > count) {
  138.         cout << "Invalid index. Please try again.\n";
  139.         return;
  140.     }
  141.  
  142.     index--; // Convert to zero-based index
  143.     cin.ignore(); // Clear newline from previous input
  144.  
  145.     cout << "\nModifying details for speaker #" << index + 1 << ":\n";
  146.  
  147.     // Modify name
  148.     cout << "Name (" << database[index].name << "): ";
  149.     getline(cin, database[index].name);
  150.  
  151.     // Modify phone number
  152.     cout << "Phone number (" << database[index].phone << "): ";
  153.     cin >> database[index].phone;
  154.  
  155.     cin.ignore(); // Clear newline from previous input
  156.  
  157.     // Modify topic
  158.     cout << "Speaking topic (" << database[index].topic << "): ";
  159.     getline(cin, database[index].topic);
  160.  
  161.     // Modify fee
  162.     cout << "Fee (" << fixed << setprecision(2) << database[index].fee << "): ";
  163.     cin >> database[index].fee;
  164.     ValidateFee(database[index].fee);
  165. }
  166.  
  167. /*******************************************************************************
  168.  * ShowSpeakers
  169.  * Displays all speakers in the database.
  170.  *******************************************************************************/
  171. void ShowSpeakers(const Speaker* database, int count) {
  172.     cout << "\n--- All Speakers ---\n";
  173.     for (int i = 0; i < count; i++) {
  174.         cout << "\nSpeaker #" << i + 1 << ":\n";
  175.         cout << "Name: " << database[i].name << "\n";
  176.         cout << "Phone number: " << database[i].phone << "\n";
  177.         cout << "Speaking topic: " << database[i].topic << "\n";
  178.         cout << "Fee: $" << fixed << setprecision(2) << database[i].fee << "\n";
  179.     }
  180. }
  181.  
  182. /*******************************************************************************
  183.  * ValidateFee
  184.  * Validates that the fee is not negative.
  185.  *******************************************************************************/
  186. void ValidateFee(float& fee) {
  187.     while (fee < 0) {
  188.         cout << "Invalid fee. Fee cannot be negative. Please enter again: ";
  189.         cin >> fee;
  190.     }
  191. }
  192.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
copy 
1
John Doe
1234567890
Technology
450
1
Jane Doe
1234567890
Planes
500
3
4
stdout
copy 
Speaker Bureau Database
--------------------------
1. Add a speaker
2. Modify a speaker
3. Show all speakers
4. Exit the program
Enter your choice: 
Enter details for speaker #1:
Name: Phone number: Speaking topic: Fee: 
Speaker Bureau Database
--------------------------
1. Add a speaker
2. Modify a speaker
3. Show all speakers
4. Exit the program
Enter your choice: 
Enter details for speaker #2:
Name: Phone number: Speaking topic: Fee: 
Speaker Bureau Database
--------------------------
1. Add a speaker
2. Modify a speaker
3. Show all speakers
4. Exit the program
Enter your choice: 
--- All Speakers ---

Speaker #1:
Name: John Doe
Phone number: 1234567890
Speaking topic: Technology
Fee: $450.00

Speaker #2:
Name: Jane Doe
Phone number: 1234567890
Speaking topic: Planes
Fee: $500.00

Speaker Bureau Database
--------------------------
1. Add a speaker
2. Modify a speaker
3. Show all speakers
4. Exit the program
Enter your choice: Exiting the program.
https://ideone.com/HCO6R1
chapter 11 #9
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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