How to make arithmetical operations in C#?

Question

I'm making a calculator, and I don't know what signs needs to be for Addition, Subtraction and Division.

  if (aritmeticalOperation == "Multiplication") //It can be other operation too.
                        {
                            long num01;
                            Int64 num02;


                            Console.Write("\n\nType a number to be multiplied: ");
                            num01 = Convert.ToInt64(Console.ReadLine());
                            Console.Write("Type another number: ");
                            num02 = Convert.ToInt64(Console.ReadLine());
                            Console.WriteLine("\nThe result is " + num01 * num02); //multiplication works but I don't know what should I put for other operations.
                            while (Console.ReadKey().Key != ConsoleKey.Enter) ;
                        }

Thanks for help ;)

Answer 1

@Singad , based on my research, you could try the following code to make make arithmetical operations in C#.

 while (true)  
            {  
                Console.WriteLine("Please input x");  
                double x = Convert.ToDouble(Console.ReadLine());  
                Console.WriteLine("Please input y");  
                double y = Convert.ToDouble(Console.ReadLine());  
                Console.WriteLine("// Please input opeartions //");  
                 
                string z = Console.ReadLine();  
                switch (z)  
                {  
                    case "+":  
                        Console.WriteLine("// Result is //");  
                        Console.WriteLine(x+y);  
                        break;  
                    case "-":  
                        Console.WriteLine("// Result is //");  
                        Console.WriteLine(x-y);  
                        break;  
                    case "*":  
                        Console.WriteLine("// Result is //");   
                        Console.WriteLine(x*y);  
                        break;  
                    case "/":  
                        if (y == 0)  
                        {  
                            Console.WriteLine("Result is 0");  
                        }  
                        else  
                        {  
                            Console.WriteLine("// Result is //");  
                            Console.WriteLine(x/y);  
                        }  
                        break;  
                }  
                Console.WriteLine("Do you want to exit ?! Y:N?");  
                char Terminat = Console.ReadKey().KeyChar;  
                if (Terminat == 'Y' || Terminat == 'y')  
                {  
                    break;  
                }  
  
            }  

Result:

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