// Copyright © 2018 Inanc Gumus
// Learn Go Programming Course
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
//
// For more tutorials  : https://learngoprogramming.com
// In-person training  : https://www.linkedin.com/in/inancgumus/
// Follow me on twitter: https://twitter.com/inancgumus

package main

import (
	"fmt"
	"os"
	"strconv"
)

func main() {
	if len(os.Args) != 2 {
		fmt.Println("Requires age")
		return
	}

	age, err := strconv.Atoi(os.Args[1])

	if err != nil || age < 0 {
		fmt.Printf(`Wrong age: %q`+"\n", os.Args[1])
		return
	} else if age > 17 {
		fmt.Println("R-Rated")
	} else if age >= 13 && age <= 17 {
		fmt.Println("PG-13")
	} else if age < 13 {
		fmt.Println("PG-Rated")
	}
}
