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  1. //Ryan Shahriyarpour   CS1A  Chapter 8   Question 1
  2. /*****************************************************************************
  3.  * 
  4.  * Charge Account Validation
  5.  * 
  6.  *********************
  7.  * 
  8.  * This program lets the user enter a charge account number and determines
  9.  * whether the number is valid by checking for it in a list of 18 valid
  10.  * account numbers stored in an array.
  11.  * 
  12.  * *******************
  13.  * A LINEAR SEARCH is used. Each element of the array is compared to the
  14.  * number entered, starting at the first element, until a match is found or
  15.  * the end of the array is reached.
  16.  * 
  17.  * INPUT
  18.  *  account  - the charge account number to check
  19.  * 
  20.  * OUTPUT    
  21.  *  A message saying whether the account number is valid or invalid
  22.  * 
  23.  ****************************************************************************/
  24.  
  25. #include <iostream>
  26. using namespace std;
  27.  
  28. // Constant for the number of valid accounts
  29. const int SIZE = 18;
  30.  
  31. int main()
  32. {
  33.     // data dictionary
  34.     int accounts[SIZE] = {          // List of valid account numbers
  35.         5658845, 4520125, 7895122, 8777541, 8451277, 1302850,
  36.         8080152, 4562555, 5552012, 5050552, 7825877, 1250255,
  37.         1005231, 6545231, 3852085, 7576651, 7881200, 4581002
  38.     };
  39.     int account;                    // Account number entered by the user
  40.     int index;                      // Loop counter for the search
  41.     bool isValid = false;           // True if the account number is in the list
  42.  
  43.     // Get the account number
  44.     cout << "Enter a charge account number: ";
  45.     cin >> account;
  46.  
  47.     // Linear search
  48.     for (index = 0; index < SIZE; index++)
  49.     {
  50.         if (accounts[index] == account)
  51.         {
  52.             isValid = true;
  53.             break;
  54.         }
  55.     }
  56.  
  57.     // Display the result
  58.     if (isValid)
  59.         cout << "\nThat account number is valid." << endl;
  60.     else
  61.         cout << "\nThat account number is invalid." << endl;
  62.  
  63.     return 0;
  64. }
Success #stdin #stdout 0s 5324KB
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stdin
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Standard input is empty
stdout
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Enter a charge account number: 
That account number is invalid.
https://ideone.com/8CMvn7
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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