public interface IBankAccount //只能加public修饰符,或者什么都不加
{
void
Playin(decimal money); //函数前不加任何修饰符号
bool WithDrew(decimal money);
decimal Account
{
get;
}
}
class aa:IBankAccount
{
private decimal
banance;
public void Playin(decimal money)//前面必须只能加public修饰符
{
banance+=money;
}
public bool WithDrew(decimal money)
{
if
(banance >= money)
{
banance -= money;
return true;
}
else return
false;
}
public decimal Account
{
get
{
return banance;
}
}
public override string
ToString()//系统内的tostring为虚基类,可以重写
{
return
String.Format("{0,6:c}",banance);
}
原文地址:http://www.cnblogs.com/hsblogs/p/3735045.html