/// <summary>
///
/// </summary>
/// <param name="fn"></param>
/// <param name="ln"></param>
/// <param name="b_a"></param>
public Client(string firstname, string lastname, string b_a, int mon, Building_Offers b)
{
this.name = firstname;
this.surname = lastname;
this.bank_account = b_a;
this.money = mon;
this.building_Offers = b.Offer;
}
//добавление public void Add(string n, string sn, string b_a, int mon, Building_Offers b) => clients.Add(new Client