C# enums 🪐

C# enums tutorial example explained
#C# #enum #tutorial
using System;
namespace MyFirstProgram
{
class Program
{
static void Main(string[] args)
{
// enums = special "class" that contains a set of named integer constants.
// Use enums when you have values that you know will not change,
// To get the integer value from an item, you must explicitly convert to an int
// name = integer
//Console.WriteLine(Planets.Mercury + " is planet #" + (int)Planets.Mercury);
//Console.WriteLine(Planets.Pluto + " is planet #" + (int)Planets.Pluto);
String name = PlanetRadius.Earth.ToString();
int radius = (int)PlanetRadius.Earth;
double volume = Volume(PlanetRadius.Earth);
Console.WriteLine("planet: " + name);
Console.WriteLine("radius: " + radius +"km");
Console.WriteLine("volume: " + volume +"km^3");
Console.ReadKey();
}
public static double Volume(PlanetRadius radius)
{
double volume = (4.0 / 3.0) * Math.PI * Math.Pow((int)radius, 3);
return volume;
}
}
enum Planets
{
Mercury = 1,
Venus = 2,
Earth = 3,
Mars = 4,
Jupiter = 5,
Saturn = 6,
Uranus = 7,
Neptune = 8,
Pluto = 9
}
enum PlanetRadius
{
Mercury = 2439,
Venus = 6051,
Earth = 6371,
Mars = 3389,
Jupiter = 69911,
Saturn = 58232,
Uranus = 25362,
Neptune = 24622,
Pluto = 1188
}
}