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  1. // Marvyn Jesse De La Torre       CS1A       Chapter 7, pg. 447, #13
  2. //
  3. /****************************************************************************
  4.  * RUN THE LOTTERY APPLICATION
  5.  *
  6.  * This program accepts five random lottery digits from 0 through 9.
  7.  * It asks the user to enter five digits and compares the user's numbers
  8.  * with the lottery numbers. It displays the lottery numbers and the number
  9.  * of matching digits. Matching all five digits makes the user a grand
  10.  * prize winner.
  11.  *
  12.  * INPUT
  13.  *   user           // The five lottery digits entered by the user
  14.  *
  15.  * OUTPUT
  16.  *   lottery        // The five randomly generated lottery digits
  17.  *   matches        // Number of matching digits
  18.  *   prizeMessage   // Whether the user won the grand prize
  19.  ****************************************************************************/
  20.  
  21. #include <iostream>
  22. #include <cstdlib>
  23. #include <ctime>
  24. #include <limits>
  25. using namespace std;
  26.  
  27. int main()
  28. {
  29.     const int SIZE = 5;
  30.     int lottery[SIZE];
  31.     int user[SIZE];
  32.     int matches = 0;
  33.  
  34.     // Seed the random number generator.
  35.     srand(static_cast<unsigned int>(time(0)));
  36.  
  37.     // Generate five random lottery digits from 0 through 9.
  38.     for (int i = 0; i < SIZE; i++)
  39.     {
  40.         lottery[i] = rand() % 10;
  41.     }
  42.  
  43.     // Ask the user to enter five digits and validate each one.
  44.     cout << "Enter five lottery digits (0 through 9).\n";
  45.     for (int i = 0; i < SIZE; i++)
  46.     {
  47.         cout << "Enter digit " << i + 1 << ": ";
  48.         cin >> user[i];
  49.  
  50.         while (cin.fail() || user[i] < 0 || user[i] > 9)
  51.         {
  52.             cout << "Invalid digit. Enter a number from 0 through 9: ";
  53.             cin.clear();
  54.             cin.ignore(numeric_limits<streamsize>::max(), '\n');
  55.             cin >> user[i];
  56.         }
  57.     }
  58.  
  59.     // Compare each user digit with the lottery digit in the same position.
  60.     for (int i = 0; i < SIZE; i++)
  61.     {
  62.         if (user[i] == lottery[i])
  63.         {
  64.             matches++;
  65.         }
  66.     }
  67.  
  68.     // Display the lottery numbers and matching digit count.
  69.     cout << "\nLottery numbers: ";
  70.     for (int i = 0; i < SIZE; i++)
  71.     {
  72.         cout << lottery[i] << " ";
  73.     }
  74.  
  75.     cout << "\nMatching digits: " << matches << endl;
  76.  
  77.     // Check whether all five digits match.
  78.     if (matches == SIZE)
  79.     {
  80.         cout << "Congratulations! You are the grand prize winner!\n";
  81.     }
  82.  
  83.     return 0;
  84. }
Success #stdin #stdout 0.01s 5320KB
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Enter five lottery digits (0 through 9).
Enter digit 1: Enter digit 2: Enter digit 3: Enter digit 4: Enter digit 5: 
Lottery numbers: 7 0 3 1 3 
Matching digits: 1
https://ideone.com/dptkf2
language:
C++ (gcc 8.3)
created:
17 hours ago
visibility:
public

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