What address is stored in the pointer to a slice in the programming language?

In Go language, a slice is a structure that contains three fields: a pointer to an array, a length, and a capacity. The pointer in a slice points to the first element of the array that the slice references.

That is, the pointer points to the start of a subarray within the underlying array, which the slice represents. Thanks to this, slices allow working with subsets of an array without copying data.

Example:

arr := [5]int{1, 2, 3, 4, 5}
slice := arr[1:4] // slice points to arr[1]

Here, the slice pointer points to the element arr[1], the length is 3, and the capacity is 4.