我正在嘗試學(xué)習(xí) Golang，因為我正在與 Nana 一起使用 Techworld 在 Youtube 上做一個教程，并學(xué)習(xí)使用函數(shù)對邏輯進行分組，它顯示了一個之前不存在的錯誤，并且它沒有在視頻中顯示給她。bookTicket(remainingTickets, userTickets, bookings, firstName, lastName, email, conferenceName)以上是對以下函數(shù)的調(diào)用：func bookTicket(remainingTickets uint, userTickets uint, bookings []string, firstName string, lastName string, email string, conferenceName string) {remainingTickets = remainingTickets - userTicketsbookings = append(bookings, firstName+" "+lastName)它說“這個預(yù)訂價值從未使用過（SA4006）”所以，這里是整個代碼：https://go.dev/play/p/GFMR7f64li1package mainimport ( "fmt" "strings")func main() { conferenceName := "Go Conference" const conferenceTickets int = 50 var remainingTickets uint = 50 bookings := []string{} greetUsers(conferenceName, conferenceTickets, remainingTickets) for { firstName, lastName, email, userTickets := getUserInput() isValidName, isValidEmail, isValidTicketNumber := validateUserInput(firstName, lastName, email, userTickets, remainingTickets) if isValidName && isValidEmail && isValidTicketNumber { bookTicket(remainingTickets, userTickets, bookings, firstName, lastName, email, conferenceName) firstNames := getFirstNames(bookings) fmt.Printf("The first name of our bookings are: %v\n", firstNames) if remainingTickets == 0 { // sair do loop/programa fmt.Println("Our conference is booked out. Come back next year.") break } } else { if !isValidName { fmt.Println("First name or last name too short.") } if !isValidEmail { fmt.Println("E-mail doesn't contain @ sign.") } if !isValidTicketNumber { fmt.Println("Number of tickets entered is invalid.") } } }}
2 回答
動漫人物
TA貢獻1815條經(jīng)驗 獲得超10個贊
因此，我對代碼進行了一些清理，現(xiàn)在它又按預(yù)期工作了。
現(xiàn)在作為包級別變量bookings在外部并且它可以工作。main
package main
import (
"fmt"
"strings"
)
const conferenceTickets int = 50
var conferenceName = "Go Conference"
var remainingTickets uint = 50
var bookings = []string{}
現(xiàn)在的bookTickets電話是：
bookTicket(userTickets, firstName, lastName, email)
調(diào)用函數(shù)：
func bookTicket(userTickets uint, firstName string, lastName string, email string) {
remainingTickets = remainingTickets - userTickets
bookings = append(bookings, firstName+" "+lastName)
fmt.Printf("Thank you %v %v for booking %v tickets. You will receive a confirmation email at %v\n", firstName, lastName, userTickets, email)
fmt.Printf("%v tickets remaining for the %v.\n", remainingTickets, conferenceName)
}
多謝你們。
收到一只叮咚
TA貢獻1821條經(jīng)驗 獲得超5個贊
與大多數(shù)其他主流語言不同，如果你不使用變量的值做某事，Go 就不允許使用變量。因此，在測試代碼中解決這個問題的方法是將值打印到控制臺。在最后添加這一行：
fmt.Println(bookings)
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