去操场＃23返回问题

Question

http://tour.golang.org/#23

package main

import (
    "fmt"
    "math"
)

func pow(x, n, lim float64) float64 {
    if v := math.Pow(x, n); v < lim {
        return v

    } else {
        fmt.Printf("%g >= %g
", v, lim)
    }
    // can't use v here, though
    return lim
}

func main() {
    fmt.Println(
        pow(3, 2, 10),
        pow(3, 3, 20),
    )
}

why the output is

27 >= 20
9 20

but not

9
27 >= 20 20

Answer 1

the code for your expected result is

    func main(){
        fmt.Println(pow(3, 2, 10))
        fmt.Println(pow(3, 3, 20))
    }

After all "pow" functions in "fmt.Println" are called, "fmt.Println" prints the results of pows