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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. const int SIZE = 18;
  5. int accountNumbers[SIZE] = {5658845, 4520125, 7895122, 8777541, 8451277, 1302850,
  6.                                   8080152, 4562555, 5552012, 5050552, 7825877, 1250255,
  7.                                   1005231, 6545231, 3852085, 7576651, 7881200, 4581002};
  8. bool isValid(int number) {
  9.     for (int i = 0; i < SIZE; ++i) {
  10.         if (accountNumbers[i] == number) {
  11.             return true;
  12.         }
  13.     }
  14.     return false;
  15. }
  16. int main() {
  17.     int inputNumber;
  18.     cout << "Enter a charge account number: ";
  19.     cin >> inputNumber;
  20.     if (isValid(inputNumber))
  21.     {
  22.         cout << "That is a valid account number." << endl;
  23.     } else 
  24.     {
  25.         cout << "That is not a valid account number." << endl;
  26.     }
  27.  
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0.01s 5304KB
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stdin
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3852085
stdout
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Enter a charge account number: That is a valid account number.
https://ideone.com/BB2cJB
8.1
language:
C++ (gcc 8.3)
created:
18 days ago
visibility:
public

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