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labs/lab7_done/MyClass/Item.cs

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+using System; 
+
+abstract class Item 
+{
+    protected long invNumber;
+    protected bool taken;
+
+    public Item(long invNumber, bool taken)
+    {
+        this.invNumber = invNumber;
+        this.taken = taken;
+    }
+
+    public Item()
+    {
+        this.taken = true;
+    }
+
+    public bool IsAvailable()
+    {
+        return taken;
+    }
+
+    public long GetInvNumber()
+    {
+        return invNumber;
+    }
+
+    private void Take()
+    {
+        taken = false;
+    }
+
+    public void TakeItem()
+    {
+        if (this.IsAvailable())
+            this.Take();
+    }
+
+
+    abstract public void Return();
+
+    public virtual void Show()
+    {
+        Console.WriteLine("Состояние единицы хранения:\n Инвентарный номер: {0}\n Наличие: {1}", invNumber, taken);
+    }
+}