golang快速入门-04-golang的多返回值

 

(1)   单返回值

func foo1(a string, b int) int {

    fmt.Println("a = ", a)
    fmt.Println("b = ", b)
 
    c := 100
    return c

}

 

(2)   匿名多返回值

func foo2(a string, b int) (int, int) {

    fmt.Println("a = ", a)

    fmt.Println("b = ", b)

    return 666, 777

}

 

(3)   形参多返回值

    func foo3(a string, b int) (r1 int, r2 int) {

    fmt.Println("---- foo3 ----")

    fmt.Println("a = ", a)

    fmt.Println("b = ", b)



    //r1 r2 属于foo3的形参，  初始化默认的值是0

    //r1 r2 作用域空间 是foo3 整个函数体的{}空间

    fmt.Println("r1 = ", r1)

    fmt.Println("r2 = ", r2)

 

    //给有名称的返回值变量赋值

    r1 = 1000
    r2 = 2000
    return

    }