C++ Forward_list Library - max_size() Function


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Description

The C++ function std::forward_list::max_size() returns the maximum number of elements can be held by forward_list. This value depends on system or library implementation.

Declaration

Following is the declaration for std::forward_list::max_size() function form std::forward_list header.

C++11

size_type max_size () const noexcept;

Parameters

None

Return value

Returns the maximum numbers that can be fit into forward_list.

Exceptions

This member function never throws exception.

Time complexity

Constant i.e. O(1)

Example

The following example shows the usage of std::forward_list::max_size() function.

#include <iostream>
#include <forward_list>

using namespace std;

int main(void) {
   forward_list<int> fl;

   cout << "max_size of list = " << fl.max_size() << endl;

   return 0;
}

Let us compile and run the above program, this will produce the following result −

max_size of list = 1152921504606846975
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