You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

90 lines
2.0 KiB

package main
import (
"fmt"
)
type Account struct {
AccountNo string
Pwd string
Balance float64
}
//存款
func (account *Account) Deposite() {
var money float64
fmt.Print("请输入存款金额:")
fmt.Scan(&money)
if money <= 0 {
fmt.Println("您输入的金额不正确")
return
}
account.Balance += money
fmt.Println("存款", money, "成功,当前金额为:", account.Balance)
}
//取款
func (account *Account) WithDraw() {
var money float64
fmt.Print("请输入取款金额:")
fmt.Scan(&money)
if money <= 0 || money > account.Balance {
fmt.Println("您输入的金额不正确")
return
}
account.Balance -= money
fmt.Println("取款", money, "成功,当前金额为:", account.Balance)
}
//查询
func (account *Account) query() {
/**
存储 小数超 8 位时,会存在精度问题: (+1.99999999=3.6799999899999998,%f=3.680000)
存储 小数超 7 位时,不存在精度问题,但是会省略:(+1.9999999=3.6799999,%f=3.680000)
存储 小数超 6 位时,不存在精度问题,不会省略: (+1.999999=3.679999,%f=3.679999)
*/
fmt.Printf("你的账号为:%v 余额:%v (补充:%f)\n", account.AccountNo, account.Balance, account.Balance)
}
func main() {
//测试
account := Account{
//AccountNo : "guangda123456",
//Pwd : "111111",
AccountNo: "1",
Pwd: "1",
Balance: 1.68,
}
var ano, pwd string
fmt.Print("请输入账号:")
fmt.Scanln(&ano)
fmt.Print("请输入和密码:")
fmt.Scanln(&pwd)
if account.AccountNo == ano && account.Pwd == pwd {
for {
var number int
fmt.Print("请选择您想要的操作(1.存款; 2.取款; 3.查询; 4.退出程序):")
fmt.Scanln(&number)
if number == 1 {
account.Deposite()
}
if number == 2 {
account.WithDraw()
}
if number == 3 {
account.query()
}
if number == 4 {
fmt.Println("已退出程序...")
break
}
}
} else {
fmt.Println("用户名或者密码输入有误,请重新输入...")
}
}