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"
)
const (
usage = "Usage: [username] [password]"
errUser = "Access denied for %q.\n"
errPwd = "Invalid password for %q.\n"
accessOK = "Access granted to %q.\n"
user = "jack"
pass = "1888"
)
func main() {
args := os.Args
if len(args) != 3 {
fmt.Println(usage)
return
}
u, p := args[1], args[2]
if u != user {
fmt.Printf(errUser, u)
} else if p != pass {
fmt.Printf(errPwd, u)
} else {
fmt.Printf(accessOK, u)
}
}
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