027函数返回值

package main

import "fmt"

func main()  {
/*   ret:= sum(3, 4)*/
    r1, r2, r3, r4 := Cale2(3, 4)
    fmt.Println(r1, r2, r3, r4)
}

//返回一个返回值
func sum(a , b int)  int{
    result := a + b
    return result
}
//预定义返回值的名字
func sum2(a, b int) (sum int) {
sum= a + b
return
}
/*多个返回值*/

func Cale(a,b int)(int,int,int,int)  {
    he := a + b
    cha := a - b
    ji := a * b
    shang := a / b
    return he,cha,ji,shang
     }

     /*多个返回值+预定义返回值名称*/

func Cale2(a,b int)(he int,cha int,ji int,shang int)  {
    he = a + b
    cha = a - b
    ji = a * b
    shang = a / b
    return
     }