The std::array is a container that encapsulates fixed-size arrays. Here are the steps for using std::array in C++:

1. Include the Header File: Begin by including the <array> header file in your code to use the std::array container.

   ```cpp

   include

   ```

2. Declare a std::array: Define a std::array specifying the data type and size. For example:

   cpp std::array<int, 5> myArray;

   This line declares an array named myArray containing integers and has a size of 5.

3. Initialize std::array elements: You can initialize the elements of the std::array upon declaration or later using curly braces {}:

   cpp std::array<int, 5> myArray = {1, 2, 3, 4, 5};

   Alternatively, you can set individual elements after declaration:

   cpp myArray[0] = 10; myArray[1] = 20; // ...

4. Accessing std::array Elements: Access elements using the subscript ([]) operator just like regular arrays:

   cpp int element = myArray[2]; // Accesses the third element of the array.

5. Iterating Through std::array: Use iterators or range-based for loops to traverse through std::array elements:

   cpp for (const auto& elem : myArray) { // Use elem }

6. Size of std::array: Retrieve the size of the std::array using its size() member function:

   cpp size_t arraySize = myArray.size();

   This returns the number of elements in the array.

7. Other Member Functions:std::array provides other member functions like at(), front(), back(), etc., for specific operations on the array elements.

Using these steps, you can effectively declare, initialize, access, and manipulate elements within a std::array in C++.