What are the best practices for using 2D arrays in C++?

What are the best practices for using 2D arrays in C++?

When using 2D arrays in C++, it's important to consider memory management, initialization, and access patterns.

Can you explain how to initialize a 2D array properly?

Sure! You can initialize a 2D array using nested braces, like this: int arr[3][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10, 11, 12}};.

What about dynamic allocation for 2D arrays?

For dynamic allocation, you can use pointers and allocate memory using new, like this: int** arr = new int*[rows]; for(int i = 0; i < rows; i++) arr[i] = new int[cols];.

Are there any performance considerations I should keep in mind?

Yes, access patterns matter! Try to access elements in a row-major order to take advantage of cache locality.