package main

import "fmt"

func genSlices() ([]int, []int, []int) {

  var s1 []int
  s2 := make([]int, 10)
  s3 := make([]int, 10, 50)
  return s1, s2, s3

}

func main() {

  s1, s2, s3 := genSlices()
  fmt.Printf("s1: len = %v cap = %v\n", len(s1), cap(s1))
  fmt.Printf("s2: len = %v cap = %v\n", len(s2), cap(s2))
  fmt.Printf("s3: len = %v cap = %v\n", len(s3), cap(s3))

}