go面试题-文件合并

将两个文件合并，方法很多

package main

import (
	"bufio"
	"fmt"
	"io/ioutil"
	"os"
)

func main() {
	buf1,_ := ioutil.ReadFile("a.go")
	buf2,_ := ioutil.ReadFile("b.go")
	file,_ := os.OpenFile("c.go",os.O_CREATE | os.O_RDWR | os.O_APPEND,0666)
	defer file.Close()
	writer := bufio.NewWriter(file)
	writer.Write(buf1)
	writer.Write(buf2)
	writer.Flush()
}