cend() Function in C++

Cend() is the function defined in C++ STL. This function produces a constant random access iterator that identifies the deque's past-the-end element. If the container is empty then cend() function returns the same as cbegin() function. This member function's iterator can only be used to iterate containers; it cannot be used to change the content of the object it is pointing at. 

Syntax:

const_iterator cend() const noexcept;

A const_iterator is an iterator that points to constant content.

Example 1: Below is the C program to use cend() function in deque to print elements in reverse order:

Elements of deque in reverse order: 
5 4 3 2 1 

• Time Complexity: O(n) where n is the number of elements in the deque.
• Auxiliary Space: O(1)

Example 2: Below is the C program to use cend() function in deque to print elements of deque:

geeks for geeks 

• Time Complexity: O(n) where n is the number of elements in the deque.
• Auxiliary Space: O(1)