Setting up a task.
The catalog stores information about the main parameters of monitors for two types of PCs: LCD and touch. When buying an LCD monitor with a tv tuner worth more than 5 thousand Grn a 5% discount is available. When buying a touch monitor, a loan is provided for 12 months.
Develop a program to work with these monitors.
Implement 2 versions of the program (console and with the Windows Forms interface).
Program requirements.
1. Develop the structure of the input file for storing monitor data.
To describe LCD monitors in a file, you need to store the following information:
- the model;
- the manufacturer (for example, ASUS, LG)
- diagonal;
- tv tuner (yes, no);
- permission (e.g., 1920x1080)
- type of matrix (for example, PLS)
- cost.
To describe the touch screens in a file, you need to store the following information:
- the model;
- the manufacturer (for example, POS Sector)
- diagonal;
- permission (e.g., 1920x1080)
- type of touch screen;
- volume of HDD;
- cost.
Note.
In order to distinguish between types of monitors when reading from a file in a collection, you can add a feature to the file.
You can specify other monitor parameters.
2. Develop a hierarchy of classes (1 base, 2 derivatives).
In the base class, keep general information about the monitors, in the derivatives - specific (one derivative class for the LCD, another for the sensory). Announce in the base class a virtual method for calculating the purchase price that is to be realized in derived classes.
When buying a monitor with a tv tuner worth more than 5 thousand Grn a 5% discount is available. When buying a touch monitor, a loan is provided for 12 months. under 3%. In the method it is necessary to calculate the cost of payment for each month.
3. In the console version, create two Collections List <> to store the data about the monitors and fill the collections from the file.
4. To implement the functions of the program:
- adding, removing monitors;
- Editing data on price and characteristics;
- viewing models of touch screens, ordered in price in ascending order;
- selection of LCD monitors only;
- the choice of printers of the specified firm;
- search for ASUS LCD monitors;
- calculation of the cost of the LCD monitor
- Calculate the cost of payment for 1 month of touch monitor.
5. In a project with the Windows Forms interface, use the LinkedList <T> collection. Implement on the form a view of the collection elements in the forward and backward directions.
