// PREDICT both printed slices. Explain the difference between the two appends.
package main

import "fmt"

func main() {
	a := []int{1, 2, 3, 4}

	b := a[:2]
	b = append(b, 99)
	fmt.Println("after append to a[:2]  ->", a)

	a = []int{1, 2, 3, 4}
	c := a[:2:2]
	c = append(c, 100)
	fmt.Println("after append to a[:2:2] ->", a)
}