Example: Arithmetic Operators in C# using Switch Case

// Arithmetic Operators in C# using Switch Case
using System;

public class W3CW {
    // It's the driver function
    static public void Main (string[] args) {
        Console.WriteLine("Enter any two positive integer numbers:\n");
        int p = Convert.ToInt32(Console.ReadLine());
        int q = Convert.ToInt32(Console.ReadLine());
        
        // It will suggest choosing an option to make the operation
        Console.WriteLine("Input your choice to make an operation\n");
        Console.WriteLine("1 :: for Addition");
        Console.WriteLine("2 :: for Subtraction");
        Console.WriteLine("3 :: for Multiplication");
        Console.WriteLine("4 :: for Division");
        Console.WriteLine("5 :: for Modulus");

        Console.WriteLine("\nEnter your choice:\n");
        int choice = Convert.ToInt32(Console.ReadLine());
        
        // It will perform all arithmetic operations
        // According to user's choice & print the final output
        switch (choice) {
            case 1:
                Console.WriteLine("Addition of "+p+" + "+q+" = "+(p + q));
                break;
                
            case 2:
                Console.WriteLine("Subtraction of "+p+" - "+q+" = "+(p - q));
                break;
                
            case 3:
                Console.WriteLine("Multiplication of "+p+" * "+q+" = "+(p * q));
                break;
                
            case 4:
                Console.WriteLine("Division of "+p+" / "+q+" = "+(float)(p + q));
                break;
                
            case 5:
                Console.WriteLine("Modulus of "+p+" % "+q+" = "+(p % q));
                break;
                
            default:
                Console.WriteLine("Kindly input correct choice!");
                break;
        }
    }
}