C# how to use enum with switch

Question

I can\'t figure out how to use switches in combination with an enum. Could you please tell me what I\'m doing wrong, and how to fix it? I have to use an enum to make a basic

Answer 1

Since C# 8.0 introduced a new switch expression for enums you can do it even more elegant:

public double Calculate(int left, int right, Operator op) =>
            op switch 
        {
            Operator.PLUS => left + right,
            Operator.MINUS => left - right,
            Operator.MULTIPLY => left * right,
            Operator.DIVIDE => left / right,
            _    =>  0
        }

Ref. https://docs.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-8