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C++ Queue push() Function

C++ Queue push() Function with Examples on tutorial for beginners and professionals, constructor, emplace(), empty(), pop(), push(), back(), size(), top(), object and class, exception, static, structs, inheritance, aggregation etc.

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C++ Queue push() Function

C++ Queue push() function is used for adding new elements at the rear of the queue. The function is implied for performing the insertion related operations.

Syntax

void push (const value_type& value);

Parameters

value: The parameter represents the value to which the element is initialized. That is the value of the newly added element in the queue.

Return value

The function has no return type, and it only adds a new element to the queue.

Example 1

#include <iostream>
#include <queue>
int main()
{
		std::queue<int> newqueue;
		int qint;
		std::cout << "Enter some valid integer values(press 0 to exit)";
		do
		{
			std::cin>> qint;
			newqueue.push(qint);
		}
		while (qint);
		std::cout<< "newqueue contains: ";
		while(!newqueue.empty())
		{
			std::cout <<" " <<newqueue.front();
			newqueue.pop();
		}
		return 0;
}

Output:

Enter some valid integer values(press 0 to exit)
1
2
3
5
6
7
0
newqueue contains: 1 2 3 5 6 7 0

Example 2

#include <iostream>
#include <queue>
using namespace std;
int main()
{
	queue<int> newqueue;
	newqueue.push(34);
	newqueue.push(68);
	while(!newqueue.empty())
	{
		cout<<" "<<newqueue.front();
		newqueue.pop();
	}
}

Output:

34 68

Complexity

One call is made to the pushback on the container that is underlying.

Data races

The modification is made to the container, and the elements contained.

Exception Safety

Guarantee as equivalent to the operations that are performed on the underlying container object is provided.

Next TopicC++ Queue




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