家庭收支代碼

main.go

package main

import(
	"fmt"
	"go_code/familyaccount/utils"
)

func main()  {
	fmt.Println("這個是面向對象")
	utils.NewFamilyAccount().MainMenu()
}

familyaccount.go

package utils

import(
	"fmt"
)

type FamilyAccount struct{
	key string
	loop bool
	balance float64
	money float64
	note string
	flag bool
	details string
}

//工廠模式
func NewFamilyAccount() *FamilyAccount{
	return &FamilyAccount{
		key : "",
		loop : true,
		balance : 10000.0,
		money : 0.0,
		note : "",
		flag : false,
		details : "收支\t賬號金額\t收支金額\t說   明",
	}
}

func (this *FamilyAccount) showDetails(){
	fmt.Println("----------------------當前收支明細記錄----------------------")
	if this.flag {
		fmt.Println(this.details)
	} else {
		fmt.Println("來一把")
	}
}

func (this *FamilyAccount) income() {
	fmt.Println("本次收入金額:")
	fmt.Scanln(&this.money)
	this.balance += this.money
	fmt.Println("本次收入說明:")
	fmt.Scanln(&this.note)
	this.details += fmt.Sprintf("\n收入\t%v\t%v\t%v", this.balance, this.money, this.note)
	this.flag = true
}

func (this *FamilyAccount) pay(){
	fmt.Println("登記支出..")
	fmt.Scanln(&this.money)

	if this.money > this.balance {
		fmt.Println("餘額不足")
		return
	}
	this.balance -= this.money
	fmt.Println("本次收入說明:")
	fmt.Scanln(&this.note)
	this.details += fmt.Sprintf("\n支出\t%v\t%v\t%v", this.balance, this.money, this.note)
	this.flag = true
}

func (this *FamilyAccount) exit(){
	fmt.Println("你確定要退出嗎？y/n")
	choice := ""
	for{
		fmt.Scanln(&choice)
		if choice == "y" || choice == "n" {
			break
		}
		fmt.Println("輸入有誤請重新輸入y/n")
	}
	
	if choice == "y" {
		this.loop = false
	}
}

func (this *FamilyAccount) MainMenu() {
	for  {
		fmt.Println("\n----------------------家庭收支記賬軟件---------------------")
		fmt.Println("                        1 收支明細")
		fmt.Println("                        2 登記收入")
		fmt.Println("                        3 登記支出")
		fmt.Println("                        4 退出軟件")
		fmt.Print("請選擇(1-4):")

		fmt.Scanln(&this.key)

		switch this.key {
		case "1":
			this.showDetails()
		case "2":
			this.income()
		case "3":
			this.pay()
		case "4":
			this.exit()
			
		default:
			fmt.Println("請輸入正確的選項...")	
		}

		if !this.loop {
			break
		}
	}
}