Here's a breakdown of the code:
1. We declare the necessary variables at the beginning of the program: `i` for loop control, `n` for the number of elements, `temp` for temporary storage during swapping, and `pass` for the pass in the selection sort algorithm.
2. We prompt the user to input the number of elements in the array and read it into the variable `n`.
3. We declare an integer array `arr` of size `n` to store the elements.
4. We use a `for` loop to input each element one by one, with a prompt for the user to enter each element.
5. The code then performs the selection sort algorithm. Selection sort repeatedly selects the minimum element from the unsorted part of the array and puts it at the beginning.
6. Finally, we print the sorted array in ascending order.