public Fund()
{
gu1 = new Stock1();
gu2 = new Stock2();
gu3 = new Stock3();
nd1 = new NationalDebt1();
rt1 = new Realty1();
}
static void Main(string[] args)
{
Stock1 gu1 = new Stock1();
Stock2 gu2 = new Stock2();
Stock3 gu3 = new Stock3();
NationalDebt1 nd1 = new NationalDebt1();
Realty1 rt1 = new Realty1();
gu1.Buy();
gu2.Buy();
gu3.Buy();
nd1.Buy();
rt1.Buy();
gu1.Sell();
gu2.Sell();
gu3.Sell();
nd1.Sell();
rt1.Sell();
Console.Read();
}