Enhanced if statements / conditional operators

There is a shorter way to write a single if else block:

C#
string number_confirm;
number_confirm = (a == 10) ? "Yes a is 10" : "no a is not 10";
Console.WriteLine(number_confirm);

Conditional operators
variable = (condition) ? "Assign this value when true": "assign this value when false"; {: .prompt-tip}

What about else if blocks?

C#
int temp = 100;
var matter = (temp > 100) ? "Gas" : (temp > 0) ? "Liquid" : "Solid"

Note
a ? b : c ? d : e is evaluated as a ? b : (c ? d : e) and not (a ? b : c ) ? d : e {: .prompt-info}

Switch Cases:

Switch cases are similar to if else statement. Except it can only validate == operators. We can't use it to validate complex logics. Often times we use switch cases with enum. We declare enums in the namespace container.

C#
namespace ANameSpace
{
	public enum Season
    {
        Spring,
        Summer,
        Autumn,
        Winter,
    }
}

To use a switch case, in the main method:

C#
var current_season = Season.Autumn;
switch (current_season)
{
	case Season.Spring:
		Console.WriteLine("Yes its spring flowers are here");
		break;
	case Season.Autumn:
		Console.WriteLine("Its autumn, my leaves has fallen");
		break;
	case Season.Winter:
		Console.WriteLine("Its Winter, let's have a snow flight");
		break;
	default:
		Console.WriteLine("Yuck its summer I/'m melting");
		break;
}

The default here works like the else block. This code will run when non of the previous conditions are true.

We also have to option to use the switch case as it is. without the use of an enum.

C#
var age = 25;
switch (age)
{
	case 15;
		Console.WriteLine("You can drive");
		break;
	case 21;
		Console.WriteLine("You can drink")
		break;
}

Note!
Switch cases use a jump table to make flows. It works differently than if else blocks and can be said to be more efficient. A rule of thumb to follow is to use switch case when there are a lot of variables to account for, and to use if else if there are only a few. {: .prompt-info}

Appendix

C#
namespace ControlFlowStatements
{
    // to use switch case lets create an enum
    public enum Season
    {
        Spring,
        Summer,
        Autumn,
        Winter,
    }
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello, World! Let's test out What is a (say 10, 20, or anything)");
            int a = 10;
            int b = 10;
            // This is an if else block
            if (a == 10 && b ==10)
            {
                Console.WriteLine("a is equal to 10 just like b");
            }
            else if (a== 20)
            {
                Console.WriteLine("a is actually 20");
            }
            else
            {
                Console.WriteLine("I don't know what is a");
            }
			
            // This is a conditional operator
            // variable = (condition) ? "condition is true": "condition is false";
            string number_confirm;
            number_confirm = (a == 10) ? "Yes a is 10" : "no a is not 10";
            Console.WriteLine(number_confirm);
            
            // This is a switch case this format creates an if else block
            var current_season = Season.Autumn;
            switch (current_season)
            {
                case Season.Spring:
                    Console.WriteLine("Yes its spring flowers are here");
                    break;
                case Season.Autumn:
                    Console.WriteLine("Its autumn, my leaves has fallen");
                    break;
                case Season.Winter:
                    Console.WriteLine("Its Winter, let's have a snow flight");
                    break;
                default:
                    Console.WriteLine("Yuck its summer I/'m melting");
                    break;
            }
			
            // This is a switch case. This is how we do an OR condition.
            // if (current_season == Season.Spring || current_season == Season.Autumn);
            switch (current_season)
            {
                case Season.Spring:
                case Season.Autumn:
                    Console.WriteLine("Ah we got promotion for both autumn and spring.");
                    break;
                case Season.Winter:
                    Console.WriteLine("Its Winter, let's have a snow flight");
                    break;
                default:
                    Console.WriteLine("Yuck its summer I/'m melting");
                    break;
            }
        }
    }
}