switch with Constant Patterns

Constant patterns match the expression against a constant value.

Code

char grade = 'B';
switch (grade)
{
    case 'A': Console.WriteLine("Excellent"); break;
    case 'B': Console.WriteLine("Good"); break;
    case 'C': Console.WriteLine("Fair"); break;
    default: Console.WriteLine("Needs improvement"); break;
}

Run the Application

dotnet run

Result

Good