Invoking Methods on Class Objects

• Once an object is constructed, methods can be invoked on it (i.e., it can be passed messages).
• The following code calls the default constructor for a new ItemInfo object and then asks for its (not yet specified) price and color:

    ItemInfo *item = new ItemInfo;
    cout << "The item's price is " << (*item).getPrice() << endl;
    cout << "The item's color is " << (*item).getColor() << endl;

  Output:

    The item's price is 0
    The item's color is

• As with structs, we can use a type definition to eliminate the pointer sytax:

    typedef class ItemInfo* Item;
    Item item = new ItemInfo;
    cout << "The item's price is " << item->getPrice() << endl;
    cout << "The item's color is " << item->getColor() << endl;