64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
// 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"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
// ---------------------------------------------------------
|
|
// EXERCISE: Days in a Month
|
|
//
|
|
// Refactor the previous exercise from the if statement
|
|
// section.
|
|
//
|
|
// "Print the number of days in a given month."
|
|
//
|
|
// Use a switch statement instead of if statements.
|
|
// ---------------------------------------------------------
|
|
|
|
func main() {
|
|
if len(os.Args) != 2 {
|
|
fmt.Println("Give me a month name")
|
|
return
|
|
}
|
|
|
|
year := time.Now().Year()
|
|
leap := year%4 == 0 && (year%100 != 0 || year%400 == 0)
|
|
|
|
days, month := 28, os.Args[1]
|
|
|
|
if m := strings.ToLower(month); m == "april" ||
|
|
m == "june" ||
|
|
m == "september" ||
|
|
m == "november" {
|
|
days = 30
|
|
} else if m == "january" ||
|
|
m == "march" ||
|
|
m == "may" ||
|
|
m == "july" ||
|
|
m == "august" ||
|
|
m == "october" ||
|
|
m == "december" {
|
|
days = 31
|
|
} else if m == "february" {
|
|
if leap {
|
|
days = 29
|
|
}
|
|
} else {
|
|
fmt.Printf("%q is not a month.\n", month)
|
|
return
|
|
}
|
|
|
|
fmt.Printf("%q has %d days.\n", month, days)
|
|
}
|