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  1. /*******************************************************************************
  2.  * Aiden Stannard // CS1A // Chapter 8 Homework: Challange 1# // 11/7/2026
  3.  * 
  4.  * Charge Amount Validation
  5.  * 
  6.  * This program validates user entered charge account number by checking it 
  7.  * from a list of 18 valid account numbers.
  8.  * 
  9.  * Inputs: 
  10.  * Enter a charge account number__
  11.  * Output: 
  12.  * This number is ___("invalid" or "valid")
  13.  ******************************************************************************/
  14. #include <iostream>
  15. using namespace std;
  16.  
  17. // Function to perform a simple linear search on a single-dimensional array
  18. bool linearSearch(const int [], int, int);
  19.  
  20. int main() 
  21. {
  22.     // Array size declaration
  23.     const int ARRAY_SIZE = 18;
  24.     // account numbers
  25.     int validAccounts[ARRAY_SIZE] = {
  26.         5658845, 4520125, 7895122, 8777541, 8451277, 1302850,
  27.         8080152, 4562555, 5552012, 5050552, 7825877, 1250255,
  28.         1005231, 6545231, 3852085, 7576651, 7881200, 4581002
  29.     };
  30.  
  31.     int userNumber;
  32.  
  33.     cout << "Enter a charge account number: ";
  34.     cin >> userNumber;
  35.  
  36.     // Determine if the number is valid using the linear search function
  37.     if (linearSearch(validAccounts, ARRAY_SIZE, userNumber)) 
  38.     {
  39.         cout << "The number is valid." << endl;
  40.     } 
  41.  
  42.     else 
  43.     {
  44.         cout << "The number is invalid." << endl;
  45.     }
  46.  
  47.     return 0;
  48. }
  49.  
  50. bool linearSearch(const int accounts[], int size, int target) 
  51. {
  52.     for (int i = 0; i < size; i++) 
  53.     {
  54.         if (accounts[i] == target) 
  55.         {
  56.             return true; // Match found
  57.         }
  58.     }
  59.     return false; // returns false bool value if if statement does not apply
  60. }
  61.  
Success #stdin #stdout 0s 5344KB
comments (?)
stdin 
 5658845
stdout 
Enter a charge account number: The number is valid.
https://ideone.com/reKkq4
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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