queue::push() method

Queues are an abstract data type, specifically designed to operate in a FIFO context (first-in-first-out). The elements are inserted into one end of the container and extracted from the other. They are a type of container adaptor in the C++ Standard Library. The queue::push() is a method available in the STL which inserts a new element at the end of the queue.

Syntax:

queue_name.push(val);

Parameters: The queue::push() method accepts a single parameter:
• Value that has to be inserted
Return type: none

Example of queue::push() method

#include <iostream>
#include <queue>

using namespace std;

int main ()
{
  queue<int> q;

  for(int i = 1; i <= 5; i++)
    q.push(i);

  while (!q.empty())
  {
    cout<<q.front()<<"  ";
    q.pop();
  }
  return 0;
}

Output:

1  2  3  4  5