fork download
copy 
  1. //Diego Martinez					CSC5				   Chapter 7, P.487,  #1
  2. /*******************************************************************************
  3. * DISPLAY TWO LARGEST EVEN NUMBERS
  4. * ______________________________________________________________________________
  5. * This program works with a collection of 15 integers provided by the user. It 
  6. * focuses the two highest even values amoung them and displays them.
  7. * 
  8. * Computation is based on the Formula:
  9. *	n > currresnt largest
  10. *	second largest < n< largest
  11. *______________________________________________________________________________
  12. * INPUT
  13. *	15 integer values entered by the user
  14. *	
  15. *	
  16. * OUTPUT
  17. *	Largest even number 
  18. *	Second largest even number
  19. *******************************************************************************/
  20. #include <iostream>
  21. using namespace std;
  22.  
  23. // ===== FUNCTION PROTOTYPES =====
  24. void inputArray(int arr[], int size);
  25. void findLargestEven(int arr[], int size, int &largest, int &secondLargest);
  26. void displayResult(int largest, int secondLargest);
  27.  
  28. // ===== MAIN FUNCTION =====
  29. int main()
  30. {
  31.     // ===== DATA DICTIONARY =====
  32.     const int SIZE = 15;     // number of elements in array
  33.     int numbers[SIZE];       // array to store integers
  34.     int largestEven;         // largest even number
  35.     int secondLargestEven;   // second largest even number
  36.  
  37.     // ===== FUNCTION CALLS =====
  38.     inputArray(numbers, SIZE);
  39.     findLargestEven(numbers, SIZE, largestEven, secondLargestEven);
  40.     displayResult(largestEven, secondLargestEven);
  41.  
  42.     return 0;
  43. }
  44.  
  45. // ===== FUNCTION DEFINITIONS =====
  46.  
  47. // Function to input array values
  48. void inputArray(int arr[], int size)
  49. {
  50.     cout << "Enter 15 integers:\n";
  51.     for (int i = 0; i < size; i++)
  52.     {
  53.         cin >> arr[i];
  54.     }
  55. }
  56.  
  57. // Function to find largest and second largest even numbers
  58. void findLargestEven(int arr[], int size, int &largest, int &secondLargest)
  59. {
  60.     largest = -1;
  61.     secondLargest = -1;
  62.  
  63.     for (int i = 0; i < size; i++)
  64.     {
  65.         if (arr[i] % 2 == 0) // check if even
  66.         {
  67.             if (arr[i] > largest)
  68.             {
  69.                 secondLargest = largest;
  70.                 largest = arr[i];
  71.             }
  72.             else if (arr[i] > secondLargest && arr[i] != largest)
  73.             {
  74.                 secondLargest = arr[i];
  75.             }
  76.         }
  77.     }
  78. }
  79.  
  80. // Function to display results
  81. void displayResult(int largest, int secondLargest)
  82. {
  83.     if (largest == -1)
  84.     {
  85.         cout << "No even numbers were entered.\n";
  86.     }
  87.     else if (secondLargest == -1)
  88.     {
  89.         cout << "Only one even number found: " << largest << endl;
  90.     }
  91.     else
  92.     {
  93.         cout << "Largest even number: " << largest << endl;
  94.         cout << "Second largest even number: " << secondLargest << endl;
  95.     }
  96. }
Success #stdin #stdout 0s 5308KB
comments (?)
stdin
copy 
1
5
12
4
16
87
43
98
14
56
32
76
67
78
45
stdout
copy 
Enter 15 integers:
Largest even number: 98
Second largest even number: 78
https://ideone.com/2upDCb
DISPLAY TWO LARGEST EVEN NUMBERS P.486, #1
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!