In C++ STL (Standard Template Library), the set container represents a collection of unique, sorted elements. In this article, we will see how to an element in a set in C++ using iterators.

Example

Input:
mySet = {1, 8, 99, 444, 521 }

Output:
mySet Value at Index 2: 99

Access an Element in a Set in C++

We can use the set iterators provided by the function std::set::begin() to access the elements of a set. Iterators are like pointers, we can access any index value using this iterator by incrementing and decrementing.

Note: While using the iterator, be careful not to go out of bounds.

C++ Program to Access an Element in a Set using Iterators

Below is the Implementation of the above approach:

Third element in the set (Using Iterators): 30

Time Complexity: O(logN)
Auxiliary Space: O(1)