<p>I am pretty new to Go so please forgive me if this question sounds dumb. I am going through the golang book and am in the section on concurrency. He example code is this</p>
<pre><code>package main
import "fmt"
func f(n int) {
for i := 0; i < 10; i++ {
fmt.Println(n, ":", i)
}
}
func main() {
go f(0)
var input string
fmt.Scanln(&input)
}
</code></pre>
<p>I am trying to understand how this works. So my question is does the fmt.Sclanln function take as input the output of the f(0) function to then feed back into that function?</p>
<hr/>**评论：**<br/><br/>NoEffex: <pre><p>The fmt.Scanln does nothing other than to stop the program from exiting before the f(0) function has completed by blocking until the user presses enter. If this wasn't there the program would immediatly exit before anything has happened because in Go the program terminate when the main function has completed. Since f(0) is in a seperate go routine it doesn't stop main from returning and will do so before f(0) has had a change to begin executing.</p></pre>
