C# Calculator Code Example: Simple Arithmetic Operations

Here's a simple C# calculator code example that demonstrates basic arithmetic operations:

using System;

namespace Calculator
{
    class Program
    {
        static void Main(string[] args)
        {
            double num1, num2, result;
            char op;

            Console.WriteLine('Enter first number: ');
            num1 = Convert.ToDouble(Console.ReadLine());

            Console.WriteLine('Enter operator (+, -, *, /): ');
            op = Convert.ToChar(Console.ReadLine());

            Console.WriteLine('Enter second number: ');
            num2 = Convert.ToDouble(Console.ReadLine());

            switch (op)
            {
                case '+':
                    result = num1 + num2;
                    Console.WriteLine(num1 + ' + ' + num2 + ' = ' + result);
                    break;
                case '-':
                    result = num1 - num2;
                    Console.WriteLine(num1 + ' - ' + num2 + ' = ' + result);
                    break;
                case '*':
                    result = num1 * num2;
                    Console.WriteLine(num1 + ' * ' + num2 + ' = ' + result);
                    break;
                case '/':
                    if (num2 == 0)
                    {
                        Console.WriteLine('Cannot divide by zero');
                    }
                    else
                    {
                        result = num1 / num2;
                        Console.WriteLine(num1 + ' / ' + num2 + ' = ' + result);
                    }
                    break;
                default:
                    Console.WriteLine('Invalid operator');
                    break;
            }

            Console.ReadLine();
        }
    }
}

This program prompts the user to enter two numbers and an operator. It then performs the corresponding operation based on the operator and outputs the result to the console. The program supports addition, subtraction, multiplication, and division operations. However, in the case of division, it avoids division by zero.