How to Remove an Element from the End of a List in C++?

How to Remove an Element from the End of a List in C++?

Last Updated : 02 Apr, 2024

In C++, lists are data structures that allow us to store data of the same type in non-contiguous memory locations. In this article, we will learn how to remove an element from the end of a list in C++.

Example

Input:
myList={10,20,30,40,50}

Output:
List Elements: 10 20 30 40

Delete the Last Element from a List in C++

To remove an element from the end of a std::list in C++, we can use the std::list::pop_back() function that removes the last element from a list in constant time.

Syntax of std::list::pop_back()

list_name.pop_back()

C++ Program to Remove an Element from the End of a List

The following program illustrates how we can remove an element from the end of a list using the pop_back() method in C++.

C++

// C++ Program to how we can remove an element from the end
// of a list using the pop_back() method
#include <iostream>
#include <list>
using namespace std;

int main()
{

    // Initializing a list
    list<int> l1 = { 10, 20, 30, 40, 50 };

    // Printing the original list
    cout << "Original List: ";
    for (int element : l1) {
        cout << element << " ";
    }
    cout << endl;

    // Removing the last element of the list using pop_back
    l1.pop_back();

    // Printing the list after removing the last element
    cout << "List after removing the last element: ";
    for (int element : l1) {
        cout << element << " ";
    }
    return 0;
}

Output

Original List: 10 20 30 40 50 
List after removing the last element: 10 20 30 40

Time Complexity: O(1)
Auxiliary Space: O(1)

How to Remove an Element from the End of a List in C++?

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