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Struct for Storing 2D Points with RGB Color in C#

This exercise focuses on using C# structures (structs) to define and manage 2D points with associated RGB color values. Each point will have x and y coordinates (short) and three color components: red, green, and blue (byte). The program will create two points, request data from the user, and then display the stored information.



Group

C# Arrays, Structures and Strings

Objective

1. Define a struct named `Point2D` with the required fields:
- `x` (short) - X coordinate
- `y` (short) - Y coordinate
- `r` (byte) - Red color component
- `g` (byte) - Green color component
- `b` (byte) - Blue color component
2. Create two instances of `Point2D`.
3. Ask the user to input values for each field of both points.
4. Display the data entered by the user.
5. Ensure proper validation for numerical inputs.

Write a C# Struct to store data of 2D points. The fields for each point will be:
- x coordinate (short)
- y coordinate (short)
- r (red color, byte)
- g (green color, byte)
- b (blue color, byte)

Write a C# program which creates two "points", asks the user for their data, and then displays their content.

Example C# Exercise

 Copy C# Code 
using System;

class Program
{
    // Defining a struct to store 2D point data with RGB color components
    struct Point2D
    {
        public short x, y;  // Coordinates
        public byte r, g, b; // RGB color values
    }

    static void Main()
    {
        Point2D point1, point2; // Creating two point instances

        // Getting data for the first point
        Console.WriteLine("Enter data for the first point:");
        point1.x = ReadShort("X coordinate: ");
        point1.y = ReadShort("Y coordinate: ");
        point1.r = ReadByte("Red component (0-255): ");
        point1.g = ReadByte("Green component (0-255): ");
        point1.b = ReadByte("Blue component (0-255): ");

        // Getting data for the second point
        Console.WriteLine("\nEnter data for the second point:");
        point2.x = ReadShort("X coordinate: ");
        point2.y = ReadShort("Y coordinate: ");
        point2.r = ReadByte("Red component (0-255): ");
        point2.g = ReadByte("Green component (0-255): ");
        point2.b = ReadByte("Blue component (0-255): ");

        // Displaying entered data
        Console.WriteLine("\nStored Points:");
        DisplayPoint("Point 1", point1);
        DisplayPoint("Point 2", point2);
    }

    // Method to safely read a short value
    static short ReadShort(string message)
    {
        short value;
        while (true)
        {
            Console.Write(message);
            if (short.TryParse(Console.ReadLine(), out value))
                return value;
            Console.WriteLine("Invalid input. Please enter a valid short integer.");
        }
    }

    // Method to safely read a byte value
    static byte ReadByte(string message)
    {
        byte value;
        while (true)
        {
            Console.Write(message);
            if (byte.TryParse(Console.ReadLine(), out value))
                return value;
            Console.WriteLine("Invalid input. Please enter a number between 0 and 255.");
        }
    }

    // Method to display a point's data
    static void DisplayPoint(string name, Point2D point)
    {
        Console.WriteLine($"{name} -> X: {point.x}, Y: {point.y}, Color: RGB({point.r}, {point.g}, {point.b})");
    }
}

 Output

Enter data for the first point:
X coordinate: 10
Y coordinate: 20
Red component (0-255): 255
Green component (0-255): 0
Blue component (0-255): 0

Enter data for the second point:
X coordinate: -5
Y coordinate: 15
Red component (0-255): 0
Green component (0-255): 255
Blue component (0-255): 255

Stored Points:
Point 1 -> X: 10, Y: 20, Color: RGB(255, 0, 0)
Point 2 -> X: -5, Y: 15, Color: RGB(0, 255, 255)

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