47 lines
871 B
Go
47 lines
871 B
Go
// For more tutorials: https://blog.learngoprogramming.com
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//
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// Copyright © 2018 Inanc Gumus
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// Learn Go Programming Course
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// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
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//
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package main
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import (
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"fmt"
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"os"
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)
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const (
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usage = "Usage: [username] [password]"
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errUser = "Access denied for %q.\n"
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errPwd = "Invalid password for %q.\n"
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accessOK = "Access granted to %q.\n"
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user, user2 = "jack", "inanc"
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pass, pass2 = "1888", "1879"
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)
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func main() {
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args := os.Args
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if len(args) != 3 {
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fmt.Println(usage)
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return
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}
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u, p := args[1], args[2]
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// More readable, right? 👍
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switch {
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case u != user && u != user2:
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fmt.Printf(errUser, u)
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case u == user && p == pass:
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// notice this one (no more duplication)
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fallthrough
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case u == user2 && p == pass2:
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fmt.Printf(accessOK, u)
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default:
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fmt.Printf(errPwd, u)
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}
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}
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