C# program to demonstrate example of nested switch statement

C# code for nested switch statement

Here, we have 3 cases:
(Case 1) Using another switch statement, that will give the color name based on the user input (color code – example "R/r" for "Red", "G/g" for "Green", ...)
(Case 2) and Case 3) will print simple message.

// C# program to demonstrate example of nested switch statement
using System;
using System.IO;
using System.Text;

namespace IncludeHelp
{
    class Test
    {
        // Main Method 
        static void Main(string[] args)
        {
            int number;

            //input a number
            Console.Write("Enter a number (1-3): ");
            number = Convert.ToInt32(Console.ReadLine());

            //outer switch statement
            switch (number)
            {
                case 1:
                    //using another case 
                    //it will input R,G or B and print the color
                    char color;
                    Console.Write("Enter color value (R/G/B): ");
                    color = Console.ReadLine()[0];
                    //validating it using switch case
                    //inner switch
                    switch (color)
                    {
                        case 'R':
                        case 'r':
                            Console.WriteLine("You've choesn "Red" color");
                            break;
                        case 'G':
                        case 'g':
                            Console.WriteLine("You've choesn "Green" color");
                            break;
                        case 'B':
                        case 'b':
                            Console.WriteLine("You've choesn "Blue" color");
                            break;
                        default:
                            Console.WriteLine("Invalid color code");
                            break;
                    }
                    break;

                case 2:
                    Console.WriteLine("Input is 2");
                    break;

                case 3:
                    Console.WriteLine("Input is 3");
                    break;
                default:
                    Console.WriteLine("Invalid number");
                    break;
            }


            //hit ENTER to exit the program
            Console.ReadLine();
        }
    }
}

Output

First run:
Enter a number (1-3): 1
Enter color value (R/G/B): B
You've choesn "Blue" color

Second run:
Enter a number (1-3): 1
Enter color value (R/G/B): r
You've choesn "Red" color

Third run:
Enter a number (1-3): 1
Enter color value (R/G/B): x
Invalid color code

Fourth run:
Enter a number (1-3): 3
Input is 3