static void Main(string[] args)
{
Main_cart mainC = new Main_cart("Vezir", 1000, new DateTime(05 / 06 / 2017));
virtual_cart virtualC1 = mainC.create_cart("Xeyal", 500, new DateTime(05 / 06 / 2017));
virtual_cart virtualC2 = mainC.create_cart("Perviz", 200, new DateTime(05 / 06 / 2017));
Console.WriteLine(mainC.amount);
}
public virtual_cart create_cart(string user, int amount, DateTime dead_line)
{
if (amount < this.amount)
{
virtual_cart virtualc = new virtual_cart(user, amount, dead_line);
this.amount -= amount;
return(virtualc);
}
else
{
Console.WriteLine("hesbiniz sifira yaxinlasir");
return(null);
}
}
