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  1. // Attached: HW_2d
  2. // ===========================================================
  3. // File: HW_2d
  4. // ===========================================================
  5. // Programmer: Elaine Torrez
  6. // Class: CMPR 121
  7. // ===========================================================
  8.  
  9. #include <iostream>
  10. using namespace std;
  11.  
  12. // Function prototype (optional but clean)
  13. int sequentialSearch(const int arr[], int size, int target);
  14.  
  15. int main()
  16. {
  17.     const int SIZE = 5;
  18.  
  19.     int idNumbers[SIZE] = {12345, 54321, 11223, 33211, 44411};
  20.     int userID;
  21.  
  22.     cout << "Enter an ID number to search: ";
  23.     cin >> userID;
  24.  
  25.     int index = sequentialSearch(idNumbers, SIZE, userID);
  26.  
  27.     if (index != -1)
  28.         cout << "ID found at index " << index << endl;
  29.     else
  30.         cout << "That ID is not in the list." << endl;
  31.  
  32.     return 0;
  33. }
  34.  
  35. // ===========================================================
  36.  
  37. int sequentialSearch(const int arr[], int size, int target)
  38. {
  39.     for (int i = 0; i < size; i++)
  40.     {
  41.         if (arr[i] == target)
  42.             return i; // found
  43.     }
  44.     return -1; // not found
  45. }
  46.  
Success #stdin #stdout 0s 5316KB
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11223
stdout
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Enter an ID number to search: ID found at index 2
https://ideone.com/HU5bgX
language:
C++ (gcc 8.3)
created:
14 hours ago
visibility:
public

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