main.go 源码
// 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")
}
}
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