golang读写文件内容

package main  import (    "fmt"    "io/ioutil" )  func main() {    inputFile := "/golang/code/test1/src/day9/文件读写/input1"    output := "/golang/code/test1/src/day9/文件读写/output"    reader, err := ioutil.ReadFile(inputFile)         if err != nil {       fmt.Println("err: ", err)       return    }     fmt.Println("reader: ", string(reader))     err1 := ioutil.WriteFile(output, reader, 0777)   // 写入文件内容，0777是创建的文件权限    if err1 != nil {       fmt.Println(err1)    } }