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  1. // Torrez, Elaine                       CS1A                         Chapter 8 P. 487, #2
  2. /********************************************************************************************
  3.  * 
  4.  * DETERMINE LOTTERY WINNER
  5.  * 
  6.  * ------------------------------------------------------------------------------------------
  7.  * This program determines whether any of a buyer's 10 lottery tickets is a winner.
  8.  * The program stores a fixed list of 10 "lucky" 5-digit combinations in an integer
  9.  * array. It then asks the user to enter this week's winning 5-digit number and
  10.  * performs a linear search through the array to see if any ticket matches.
  11.  * If a match is found, the program reports that the player has a winning ticket;
  12.  * otherwise, it reports that none of the tickets is a winner this week.
  13.  * ------------------------------------------------------------------------------------------
  14.  * 
  15.  * INPUT
  16.  *    winningNum : This week's winning 5-digit lottery number
  17.  * 
  18.  * OUTPUT
  19.  *    Message stating whether the player has a winning ticket or not
  20.  * 
  21.  ********************************************************************************************/
  22.  
  23. #include <iostream>
  24. #include <iomanip>
  25. using namespace std;
  26.  
  27. int main()
  28. {
  29.     const int SIZE = 10;                     // Number of lottery tickets
  30.  
  31.     int tickets[SIZE] = {                    // Buyer's 10 "lucky" numbers
  32.         13579, 26791, 26792, 33445, 55555,
  33.         62483, 77777, 79422, 85647, 93121
  34.     };
  35.  
  36.     int  winningNum;                         // This week's winning number
  37.     bool isWinner = false;                   // True if a ticket matches
  38.  
  39.     // ----------------------------------------------------
  40.     // INPUT: Get this week's winning 5-digit number
  41.     // ----------------------------------------------------
  42.     cout << "Enter this week's winning 5-digit lottery number: ";
  43.     cin  >> winningNum;
  44.  
  45.     // Simple input validation for a 5-digit positive number
  46.     while (winningNum < 10000 || winningNum > 99999)
  47.     {
  48.         cout << "ERROR: Enter a VALID 5-digit number (10000 - 99999): ";
  49.         cin  >> winningNum;
  50.     }
  51.  
  52.     // ----------------------------------------------------
  53.     // PROCESSING: Linear search through the ticket list
  54.     // ----------------------------------------------------
  55.     for (int i = 0; i < SIZE; i++)
  56.     {
  57.         if (tickets[i] == winningNum)
  58.         {
  59.             isWinner = true;
  60.             break;                           // Exit loop early if match found
  61.         }
  62.     }
  63.  
  64.     cout << endl;
  65.     cout << fixed << setprecision(0);
  66.  
  67.     // ----------------------------------------------------
  68.     // OUTPUT: Report if any ticket is a winner
  69.     // ----------------------------------------------------
  70.     if (isWinner)
  71.         cout << "Congratulations! One of your tickets is a WINNER." << endl;
  72.     else
  73.         cout << "Sorry, none of your tickets is a winner this week." << endl;
  74.  
  75.     return 0;
  76. }
  77.  
Success #stdin #stdout 0.01s 5276KB
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Enter this week's winning 5-digit lottery number: 
Congratulations! One of your tickets is a WINNER.
https://ideone.com/EdNe8k
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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