my_first_file

using System;

class Program
{
    static void Main()
    {
using System;

class Program
{
    static void Main(string[] args)
    {
        int num1 = 5; // First number
        int num2 = 10; // Second number
        int sum = num1 + num2; // Calculate the sum
        Console.WriteLine("The sum of {0} and {1} is: {2}", num1, num2, sum); 
    }
}
        Console.Write("Enter first number: ");
        double num1 = Convert.ToDouble(Console.ReadLine());

        Console.Write("Enter second number: ");
        double num2 = Convert.ToDouble(Console.ReadLine());

        if (num2 != 0)
        {
            double quotient = num1 / num2;
            Console.WriteLine($"The quotient of {num1} divided by {num2} is {quotient}");
        }
        else
        {
            Console.WriteLine("Division by zero is not allowed.");
        }
    }
}
SUBTRACT TWO NUMBERS
using System;

class Program
{
    static void Main()
    {
        Console.Write("Enter first number: ");
        double num1 = Convert.ToDouble(Console.ReadLine());

        Console.Write("Enter second number: ");
        double num2 = Convert.ToDouble(Console.ReadLine());

        double difference = num1 - num2;

        Console.WriteLine($"The difference between {num1} and {num2} is {difference}");
    }
}