package main

import (
	"fmt"
)

func main() {

	var arr [3]int
	fmt.Println(len(arr), cap(arr))
	var arr1 []int
	arr1 = append(arr1, 2)
	fmt.Println(len(arr1), cap(arr1))

	var arr3 = make([]int, 0)
	fmt.Println(len(arr3), cap(arr3))
	arr3 = append(arr3, 1, 2, 3, 3, 4, 2, 5, 5, 6, 6, 3)
	//子切片
	fmt.Println(arr3[0:1])
}

//多参数返回
func add(num, num2 int) (string, int) {
	return "num+num2=", num + num2
}

//不限数量参数传入
func multiParams(s ...int) {
	fmt.Println(s)
}




GOROOT=/usr/local/go #gosetup
GOPATH=/Users/langhuaili/go #gosetup
/usr/local/go/bin/go build -o /private/var/folders/1v/tcj55mj165vgcglnqkrkgtk40000gn/T/GoLand/___go_build_geekstudy geekstudy #gosetup
/private/var/folders/1v/tcj55mj165vgcglnqkrkgtk40000gn/T/GoLand/___go_build_geekstudy
3 3
1 1
0 0
[1]