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  1. //Diego Martinez					CSC5				   Chapter 7, P.490, #14
  2. /*******************************************************************************
  3. *  DISPLAY LOTTERY GRAND PRIZE WINNER
  4. * ______________________________________________________________________________
  5. * This program simulates a lottery system by generating five random digits and
  6. * comparing them to five user-entered digits.
  7. * 
  8. * Computation is based on the Formula:
  9. *	Grand Prize Winner if Total Matches = 5
  10. *______________________________________________________________________________
  11. * INPUT
  12. *	Five integer digits (range 0-9)
  13. *	Five random  generated digits (range 0-9)
  14. * OUTPUT
  15. *	Generated lottery numbers 
  16. *	User's entered numbers
  17. *	Number of matching digits
  18. *	Grand Prize Winner
  19. *	
  20. *******************************************************************************/
  21. #include <iostream>
  22. #include <cstdlib>
  23. #include <ctime>
  24. using namespace std;
  25.  
  26. // ===== CONSTANT =====
  27. const int SIZE = 5;
  28.  
  29. // ===== FUNCTION PROTOTYPES =====
  30. void generateLottery(int lottery[]);
  31. void getUserNumbers(int user[]);
  32. int countMatches(int lottery[], int user[]);
  33. void displayResults(int lottery[], int user[], int matches);
  34.  
  35. // ===== MAIN FUNCTION =====
  36. int main()
  37. {
  38.     // ===== DATA DICTIONARY =====
  39.     int lottery[SIZE];   // random lottery numbers
  40.     int user[SIZE];      // user input numbers
  41.     int matches;         // number of matching digits
  42.  
  43.     srand(time(0)); // seed random generator
  44.  
  45.     // ===== FUNCTION CALLS =====
  46.     generateLottery(lottery);
  47.     getUserNumbers(user);
  48.     matches = countMatches(lottery, user);
  49.     displayResults(lottery, user, matches);
  50.  
  51.     return 0;
  52. }
  53.  
  54. // ===== FUNCTION DEFINITIONS =====
  55.  
  56. // Generate random lottery numbers (0–9)
  57. void generateLottery(int lottery[])
  58. {
  59.     for (int i = 0; i < SIZE; i++)
  60.     {
  61.         lottery[i] = rand() % 10;
  62.     }
  63. }
  64.  
  65. // Get user input
  66. void getUserNumbers(int user[])
  67. {
  68.     cout << "Enter 5 digits (0-9):\n";
  69.     for (int i = 0; i < SIZE; i++)
  70.     {
  71.         cin >> user[i];
  72.     }
  73. }
  74.  
  75. // Count matching positions
  76. int countMatches(int lottery[], int user[])
  77. {
  78.     int count = 0;
  79.  
  80.     for (int i = 0; i < SIZE; i++)
  81.     {
  82.         if (lottery[i] == user[i])
  83.         {
  84.             count++;
  85.         }
  86.     }
  87.  
  88.     return count;
  89. }
  90.  
  91. // Display results
  92. void displayResults(int lottery[], int user[], int matches)
  93. {
  94.     cout << "\nLottery numbers: ";
  95.     for (int i = 0; i < SIZE; i++)
  96.     {
  97.         cout << lottery[i] << " ";
  98.     }
  99.  
  100.     cout << "\nYour numbers:    ";
  101.     for (int i = 0; i < SIZE; i++)
  102.     {
  103.         cout << user[i] << " ";
  104.     }
  105.  
  106.     cout << "\n\nMatching digits: " << matches << endl;
  107.  
  108.     if (matches == SIZE)
  109.     {
  110.         cout << "Congratulations! Grand Prize Winner!\n";
  111.     }
  112. }
Success #stdin #stdout 0.01s 5312KB
comments (?)
stdin
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3 7 2 9 5
stdout
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Enter 5 digits (0-9):

Lottery numbers: 1 1 2 6 7 
Your numbers:    3 7 2 9 5 

Matching digits: 1
https://ideone.com/M9RWTu
DISPLAY LOTTERY GRAND PRIZE WINNER P.490, #14
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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