// Question 4. What will be displayed on the screen package main import "fmt" func subis(is []int) []int { return append(is, 5) } func main() { is := []int{1, 2, 3, 4} subis(is[2:3]) fmt.Println(is) }

In this code, a slice is is created with elements [1, 2, 3, 4]. Then, the function subis is called with the argument is[2:3], which is a slice containing only the element 3.

The subis function returns a new slice obtained by adding the element 5 to the passed slice. However, the result of the subis call is not stored anywhere, so the original slice is remains unchanged.

The program output will be:

[1 2 3 4]

Explanation:

• Slices in Go are structures containing a pointer to an array, a length, and a capacity.
• is[2:3] creates a new slice of length 1 pointing to the element 3 in the array.
• append can modify the original array if there is enough capacity, but since the result is not assigned, changes are not saved.
• The original slice is remains unchanged.