forward_list::max_size() in C++ STL

std::forward_list::max_size() is an inbuilt function in CPP STL which returns the maximum number of elements can be held by forward_list. This value depends on system or library implementation.


forwardlist_name.max_size ()

Parameters: The function does not accept any parameters.

Return value:The function returns the maximum numbers that can be stored into the forward_list.

Below program demonstrates the above function:





// C++ program to illustrate the
// max_size() function
#include <bits/stdc++.h>
using namespace std;
int main()
    // initialising the forward list
    forward_list<int> f;
    // print max number of values that 
    // can be held by forward_list
    cout << "Max_size of the list is " 
    << f.max_size() << endl;
    return 0;



Max_size of the list is 1152921504606846975

Don’t stop now and take your learning to the next level. Learn all the important concepts of Data Structures and Algorithms with the help of the most trusted course: DSA Self Paced. Become industry ready at a student-friendly price.

My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using or mail your article to See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.

Article Tags :
Practice Tags :

Be the First to upvote.

Please write to us at to report any issue with the above content.