关于如何使用stdin，现举两个例子演示其使用。

example1

直接从os.Stdin中读取

package main

import (

        "fmt"
        "os"
)


func main() {
        var buffer [512]byte

        n,err := os.Stdin.Read(buffer[:])
        if err != nil {

                fmt.Println("read error:",err)
                return

        }


        fmt.Println("count:",n,",msg:",string(buffer[:]))

}

output:

$ ./test
Hello
count: 6,msg: Hello

example2

通过bufio读取

package main

import (

        "bufio"
        "fmt"
        "os"
)


func main() {

        reader := bufio.NewReader(os.Stdin)

        result,err := reader.ReadString('\n')
        if err != nil {

                fmt.Println("read error:",err)
        }


        fmt.Println("result:",result)

}

output:

$ ./test
nihao
result: nihao

更多信息可参考os package说明:
http://docs.studygolang.com/pkg/os/