1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <queue> 11 12// priority_queue(); 13 14// template <class T, class Container, class Compare> 15// void swap(priority_queue<T, Container, Compare>& x, 16// priority_queue<T, Container, Compare>& y); 17 18#include <queue> 19#include <cassert> 20 21int main() 22{ 23 std::priority_queue<int> q1; 24 std::priority_queue<int> q2; 25 q1.push(1); 26 q1.push(3); 27 q1.push(2); 28 swap(q1, q2); 29 assert(q1.empty()); 30 assert(q2.size() == 3); 31 assert(q2.top() == 3); 32} 33