package main

import (
	"encoding/json"
	"io/ioutil"
)

type Student struct {
	Name  string
	Age   int
	Score float32
}

func (p *Student) Save() (err error) {
	data, err := json.Marshal(p)
	if err != nil {
		return nil
	}
	err = ioutil.WriteFile("/home/hu/go/src/stu.txt", data, 0755)
	return err
}
func (p *Student) Load() (err error) {
	data, err := ioutil.ReadFile("/home/hu/go/src/stu.txt")
	if err != nil {
		return nil
	}
	err = json.Unmarshal(data, p)
	return
}