package main

import (

    "encoding/json"

    "fmt"

    "log"

)

type User struct {

    Name string

    Age int8

}

func testMarshal() []byte {

    user := User{

        Name: "Tab",

        Age: ,

    }

    data, err := json.Marshal(user)

    if err != nil {

        log.Fatal(err)

    }

    return data

}

func testUnmarshal(data []byte) {

    var user User

    err := json.Unmarshal(data, &user)

    if err != nil {

        log.Fatal(err)

    }

    fmt.Println(user)

}

func main() {

    var data []byte

    data = testMarshal()

    fmt.Println(string(data))

    testUnmarshal(data)

}