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C++ Queue Library - push() Function
Description
The C++ function std::priority_queue::push() inserts new element in sorted order in the priority_queue by performing
move operation. This member function increases size of queue by one.
Declaration
Following is the declaration for std::priority_queue::push() function form std::queue header.
C++11
void push (value_type&& val);
Parameters
val − Value to be assigned to newly inserted element.
Return value
None.
Exceptions
This member function never throws exception.
Example
The following example shows the usage of std::priority_queue::push() function.
#include <iostream> #include <queue> using namespace std; int main(void) { auto it1 = {3, 1, 5, 2, 4}; priority_queue<int> q1(less<int>(), it1); priority_queue<int> q2; for (int i = 0; i < 5; ++i) { q2.push(move(q1.top())); q1.pop(); } cout << "Contents of q1" << endl; while (!q1.empty()) { cout << q1.top() << endl; q1.pop(); } cout << "Contents of q2" << endl; while (!q2.empty()) { cout << q2.top() << endl; q2.pop(); } return 0; }
Let us compile and run the above program, this will produce the following result −
Contents of q1 Contents of q2 5 4 3 2 1
queue.htm
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