C# calculator

class Program
{
    static void Main(string[] args)
    {
        int num1;
        int num2;
        string operand;
        float answer;

        Console.Write("Please enter the first integer: ");
        num1 = Convert.ToInt32(Console.ReadLine());

        Console.Write("Please enter an operand (+, -, /, *): ");
        operand = Console.ReadLine();

        Console.Write("Please enter the second integer: ");
        num2 = Convert.ToInt32(Console.ReadLine());

        switch (operand)
        {
            case "-":
                answer = num1 - num2;
                break;
            case "+":
                answer = num1 + num2;
                break;
            case "/":
                answer = num1 / num2;
                break;
            case "*":
                answer = num1 * num2;
                break;
            default:
                answer = 0;
                break;
        }

        Console.WriteLine(num1.ToString() + " " + operand + " " + num2.ToString() + " = " + answer.ToString());

        Console.ReadLine();
    }
}