Source of is_heap2a.cpp

Structures and functions

  1: //is_heap2a.cpp

  3: #include <iostream>
  4: #include <iomanip>
  5: #include <vector>
  6: #include <algorithm>
  7: #include <functional>
  8: using namespace std;

 10: int main()
 11: {
 12:     cout << "\nThis program illustrates the use of the STL "
 13:         "is_heap() algorithm from\n<algorithm> and the "
 14:         "greater<int>() functor from <functional> to test"
 15:         "\nwhether a vector of integers is a minimum heap.";
 16:     cout << "\nPress Enter to continue ... "; cin.ignore(80, '\n');

 18:     int a[] = {3, 8, 5, 9, 12, 14, 6, 17, 15};
 19:     int b[] = {3, 8, 5, 9, 6, 14, 12, 17, 15};
 20:     vector<int> va(a, a+9);
 21:     vector<int> vb(b, b+9);
 22:     cout << boolalpha;
 23:     cout << is_heap(va.begin(), va.end(), greater<int>()) << endl;
 24:     cout << is_heap(vb.begin(), vb.end(), greater<int>()) << endl;
 25:     cout << "Press Enter to continue ... "; cin.ignore(80, '\n');
 26: }