package main

import (
	"fmt"
)

func printSlice(s []int) {
	fmt.Printf("len=%d cap=%d %v\n", len(s), cap(s), s)
}

func main() {
	s := make([]int, 5)
	printSlice(s)

	s2 := make([]int, 0, 5)
	printSlice(s2)
	for i := 0; i < 5; i++ {
		s2 = append(s2, 1)
	}
	printSlice(s2)
	s2 = append(s2, 1)
	printSlice(s2)
}

// print

// len=5 cap=5 [0 0 0 0 0]

// len=0 cap=5 []
// len=5 cap=5 [1 1 1 1 1]
// len=6 cap=10 [1 1 1 1 1 1]