golang讀寫文件內容

package main

import (
   "fmt"
   "io/ioutil"
)

func main() {
   inputFile := "/golang/code/test1/src/day9/文件讀寫/input1"
   output := "/golang/code/test1/src/day9/文件讀寫/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)   // 寫入文件內容，0777是創建的文件權限
   if err1 != nil {
      fmt.Println(err1)
   }
}