Lære Udfordring: Metoder | Introduktion til Objektorienteret Programmering (OOP)

Udfyld de manglende felter for at oprette en metode, der beregner arealet af en cirkel og returnerer værdien.

index.cs


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using System;

public class ConsoleApp
{
    class Point {
        public double x;
        public double y;
    }
    
    class Circle {
        public double radius;
        public Point center;
        
        ___ ___ ___() {
            // The formula is: pi . r . r
            // The value of pi is 3.14
            // r is the radius
            ___ ___ * ___* radius;
        }
    }
    
    public static void Main(string[] args)
    {
        Point p = new Point();
        p.x = 15;
        p.y = 15;
        
        Circle circle = new Circle();
        circle.radius = 10;
        circle.center = p;
        Console.WriteLine($"Area of the circle with center at ({circle.center.x}, {circle.center.y}) and radius of {circle.radius} is {circle.area()}");
    }
}

Metoden returnerer en double-værdi.
Sørg for, at metoden bruger nøgleordet public.

index.cs


              123456789101112131415161718192021222324252627282930313233
            
using System;

public class ConsoleApp
{
    class Point {
        public double x;
        public double y;
    }
    
    class Circle {
        public double radius;
        public Point center;
        
        public double area() {
            // The formula is: pi . r . r
            // The value of pi is 3.14
            // r is the radius
            return 3.14 * radius * radius;
        }
    }
    
    public static void Main(string[] args)
    {
        Point p = new Point();
        p.x = 15;
        p.y = 15;
        
        Circle circle = new Circle();
        circle.radius = 10;
        circle.center = p;
        Console.WriteLine($"Area of the circle with center at ({circle.center.x}, {circle.center.y}) and radius of {circle.radius} is {circle.area()}");
    }
}

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Sektion 3. Kapitel 8

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Udfyld de manglende felter for at oprette en metode, der beregner arealet af en cirkel og returnerer værdien.

index.cs


              123456789101112131415161718192021222324252627282930313233
            
using System;

public class ConsoleApp
{
    class Point {
        public double x;
        public double y;
    }
    
    class Circle {
        public double radius;
        public Point center;
        
        ___ ___ ___() {
            // The formula is: pi . r . r
            // The value of pi is 3.14
            // r is the radius
            ___ ___ * ___* radius;
        }
    }
    
    public static void Main(string[] args)
    {
        Point p = new Point();
        p.x = 15;
        p.y = 15;
        
        Circle circle = new Circle();
        circle.radius = 10;
        circle.center = p;
        Console.WriteLine($"Area of the circle with center at ({circle.center.x}, {circle.center.y}) and radius of {circle.radius} is {circle.area()}");
    }
}

Metoden returnerer en double-værdi.
Sørg for, at metoden bruger nøgleordet public.

index.cs


              123456789101112131415161718192021222324252627282930313233
            
using System;

public class ConsoleApp
{
    class Point {
        public double x;
        public double y;
    }
    
    class Circle {
        public double radius;
        public Point center;
        
        public double area() {
            // The formula is: pi . r . r
            // The value of pi is 3.14
            // r is the radius
            return 3.14 * radius * radius;
        }
    }
    
    public static void Main(string[] args)
    {
        Point p = new Point();
        p.x = 15;
        p.y = 15;
        
        Circle circle = new Circle();
        circle.radius = 10;
        circle.center = p;
        Console.WriteLine($"Area of the circle with center at ({circle.center.x}, {circle.center.y}) and radius of {circle.radius} is {circle.area()}");
    }
}

Var alt klart?

Tak for dine kommentarer!

Sektion 3. Kapitel 8