Can you show me some examples of using std::array in C++?

Can you show me some examples of using std::array in C++?

Sure! Here's a simple example of declaring and initializing a std::array:

#include <array>
#include <iostream>

int main() {
    std::array<int, 5> arr = {1, 2, 3, 4, 5};
    for (const auto& elem : arr) {
        std::cout << elem << ' ';
    }
    return 0;
}

This code initializes an array of integers and prints its elements.

What are the advantages of using std::array over regular arrays?

std::array provides several advantages:

1. It has a fixed size known at compile time.
2. It supports standard container operations like size() and iterators.
3. It provides better type safety and integration with the C++ Standard Library.

Can you explain how to access elements in a std::array?

Certainly! You can access elements in a std::array using the subscript operator or the at() method. For example:

std::array<int, 3> arr = {10, 20, 30};
std::cout << arr[0]; // Outputs 10
std::cout << arr.at(1); // Outputs 20

The at() method also performs bounds checking.

How do I sort a std::array?

You can sort a std::array using the std::sort algorithm from the <algorithm> header. Here's an example:

#include <array>
#include <algorithm>
#include <iostream>

int main() {
    std::array<int, 5> arr = {5, 3, 1, 4, 2};
    std::sort(arr.begin(), arr.end());
    for (const auto& elem : arr) {
        std::cout << elem << ' ';
    }
    return 0;
}

This will sort the array in ascending order.