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: }