Array classes are generally more efficient, light-weight and reliable than C-style arrays. The introduction of array class from C++11 has offered a better alternative for C-style arrays.
This function is used to return the reference to the element present at the position given as the parameter to the function.
array_name.at(position) Parameters: Position of the element to be fetched.
Return: It return the reference to the element at the given position.
Input: array_name1 = [1, 2, 3] array_name1.at(2); Output: 3 Input: array_name2 = ['a', 'b', 'c', 'd', 'e'] array_name2.at(4); Output: e
Element present at position 2: 3 Element present at position 4: e
Time Complexity: Constant i.e. O(1).
Given an array of integers, print integers in alternate fashion starting from 1st position.
Input: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 Output: 2 4 6 8 10
2 4 6 8 10
- Find the Deepest Node in a Binary Tree Using Queue STL - SET 2
- C++ program to compare two Strings using Operator Overloading
- not1 and not2 function templates in C++ STL with Examples
- Go vs C++
- Trie Data Structure using smart pointer and OOP in C++
- Modular Exponentiation of Complex Numbers
- std::hash class in C++ STL
- History of C++
- What are Forward declarations in C++
- __builtin_inf() functions of GCC compiler
- Structures in C++
- Variables in C++
- Implementing Forward Iterator in BST
- Count substrings that contain all vowels | SET 2
- Machine Learning in C++
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to firstname.lastname@example.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.