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// void pop(); 13 14#include <queue> 15#include <cassert> 16 17int main() 18{ 19 std::queue<int> q; 20 assert(q.size() == 0); 21 q.push(1); 22 q.push(2); 23 q.push(3); 24 assert(q.size() == 3); 25 assert(q.front() == 1); 26 assert(q.back() == 3); 27 q.pop(); 28 assert(q.size() == 2); 29 assert(q.front() == 2); 30 assert(q.back() == 3); 31 q.pop(); 32 assert(q.size() == 1); 33 assert(q.front() == 3); 34 assert(q.back() == 3); 35 q.pop(); 36 assert(q.size() == 0); 37} 38