C++ map cend() Function

C++ map cend() function is used to return a constant iterator which is next to the last entry in the map.

Note:-This is a placeholder. No element exists in this location and attempting to access is undefined behavior.

Syntax

Note: A const_iterator is an iterator that points to constant content.

Parameter

None

Return value

It returns a constant iterator pointing next to the last element of the map.

Example 1

Let's see a simple example for cend() function.

Output:

mymap contains: [a:200] [b:100] [c:300]

In the above example, cend() function is used to return an iterator pointing next to the last element in the mymap map.

Example 2

Let's see a simple example to iterate over the map using for-each loop.

Output:

Room1 = 100
Room2 = 200
Room3 = 300 

In the above example, we are using an STL algorithm std::for-each to iterate over the map. It will iterate on each of the map element and call the callback provided by us.

Example 3

Let's see a simple example to iterate over the map using while loop.

Output:

100 = Nikita
200 = Deep
300 = Priya
400 = Suman
500 = Aman

In the above example, cend() function is used to return a constant iterator pointing next to the last element in the mymap map.

Example 4

Let's see a simple example.

Output:

Elements are:
10 + 10 = 20
20 + 20 = 40
30 + 30 = 60
end element (point next to the last): {3, 0}

In the above example, cend() function is used to return a constant iterator pointing next to the last element in the mymap map.