机房收费系统更能模块伪代码

以下是机房收费系统的模块伪代码：

1. 用户登录模块

function user_login():
username = input("请输入用户名：")
password = input("请输入密码：")
if check_credentials(username, password):
return True
else:
return False

2. 用户注册模块

function user_register():
username = input("请输入用户名：")
password = input("请输入密码：")
confirm_password = input("请再次输入密码：")
if password == confirm_password:
if register_user(username, password):
return True
else:
return False
else:
print("两次输入的密码不一致，请重新输入！")
return False

3. 机房计费模块

function compute_cost(username, time_in_minutes):
cost_per_minute = 0.5 # 假设每分钟收费 0.5 元
total_cost = cost_per_minute * time_in_minutes
if check_balance(username, total_cost):
deduct_balance(username, total_cost)
return total_cost
else:
return -1

4. 用户余额查询模块

function check_balance(username):
balance = get_balance(username)
if balance >= 0:
return balance
else:
return -1

5. 用户充值模块

function recharge_account(username, amount):
if add_balance(username, amount):
return True
else:
return False

6. 账单查询模块

function check_bill(username, start_date, end_date):
bill = get_bill(username, start_date, end_date)
if bill:
return bill
else:
return "未查询到账单！"