Function Parameters Of Main, Sum - C# Programming Exercise

// Importing the System namespace to access basic system functions
using System;

class Program
{
    // Main method where the program starts
    public static void Main(string[] args)
    {
        // Checking if the user has provided two arguments
        if (args.Length == 2)
        {
            try
            {
                // Parsing the arguments to integers safely
                int num1 = int.Parse(args[0]); // The first number provided in the command line
                int num2 = int.Parse(args[1]); // The second number provided in the command line

                // Calculating and displaying the sum of the two numbers
                Console.WriteLine(num1 + num2); // The sum of num1 and num2 is printed
            }
            catch (FormatException) 
            {
                // If the user inputs non-numeric values, catch the exception and display an error message
                Console.WriteLine("Error: Please enter valid integers.");
            }
        }
        else
        {
            // If the user does not provide exactly two arguments, display an error message
            Console.WriteLine("Please provide exactly two numbers.");
        }
    }
}

 Output

-- Case 1: Execution with two valid numbers
dotnet run 5 7
12

-- Case 2: Non-numeric input (errors when trying to convert arguments to integers)
dotnet run 5 a
Error: Please enter valid integers.

-- Case 3: Fewer than two arguments
dotnet run 5
Please provide exactly two numbers.

-- Case 4: More than two arguments
dotnet run 5 7 10
Please provide exactly two numbers.