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Question

Account类://balance(余额）withdraw(取出）deposit(存入）
class Account{
  public boolean ture;
  protected double balance;
  public Account(){
       balance = 0;
    }
  public Account(double init_balance){
          balance=init_balance;
    }
  public double getBalance(){
          return balance;
    }
  public boolean deposit(double amt){
        
          if(amt>0){
                balance = balance + amt;
                return ture;
          }
          
           else {
                return false;
                }
   }
   public boolean withdraw(double amt) {
           if((balance-amt)>0){
                 balance = balance - amt;
                 return ture;
           }
           else return false;
   }
}
 
要求编写一个CheckingAccount子类
 -overdraftprotection :double+CheckingAccount(balance:double)
+CheckingAccount(balance:double,protect:double)
+withdraw(amt:double):boolean
该怎么写啊 刚开始写程序 老师就布置这样的题 做不出来 郁闷中 各位大大帮帮忙啊!!!

Answer 1

一个问题你发了好几遍，每次都只有20分