C++ Deque max_size

C++ Deque max_size function is a built in function that returns the maximum number of elements that deque container can hold.

Syntax

return_type max_size();

here , return_type is a unsigned integral type.

Parameter

It does not contain any parameter.

Return value

It returns the maximum size of the deque.

Example 1

Let's see a simple example

#include <iostream>
#include<deque>
using namespace std;
int main()
{
   deque<int> a={1,2,3,4,5,6};
  cout<<"Maximum size of deque 'a' is:";
  cout<<a.max_size();
  return 0;
}

Output:

Maximum size of deque 'a' is:4611686018427387903