using System;

​

​

public class calculate {

    public int Add(int a, int b) { return a + b;} // int add 15 + 25 

    public double Add(double a, double b) {return a + b;} // 

    public decimal Add(decimal a, decimal b) {return a + b;} // decimal add 15.5 + 25.7

    // Using out parameters 

    public void DivideWithRemainder(int dividend, int divisor, out int quotient, out int remainder) 

    {

        quotient = dividend/divisor;

        remainder = dividend % divisor;

        Console.WriteLine($"Division: {dividend} ÷ {divisor} = {quotient} remainder {remainder}");

    }

    // Using ref parameter 

    public void SwapNumbers(ref int a, ref int b) 

    {   

        int c = b;

        b = a;

        a = c;

        Console.WriteLine("Swapped Numbers: a = " + a + ", b = " + b);

    }

    // Using params 

    public double CalculateAverage(params double[] numbers)

    {

        double total = 0;

        int r = 0;

        // for each loop

        foreach(int i in numbers) {

            total += i;

            r += 1;

        }

        return total/r;

    } 

    //Using optional parameters

    public double CalculatePower(double baseNumber, int exponent = 2) 

    {

        double power = Math.Pow(baseNumber, exponent);

        return power;

    }

​

}

​

​

public class Program

{

    public static void Main(string[] args)

    {

        // Module 4

        // Exercise 1

        // Anastasia Salazar

        calculate c = new calculate(); // instantiate the object 

        // Set up Output

        Console.WriteLine("Math Operations Test");

        Console.WriteLine("--------------------");

        Console.WriteLine("Addition: " + c.Add(15, 25)); // addition 

        decimal deci = c.Add(15.5m, 25.7m);

        Console.WriteLine($"Decimal Addition: " + deci); // decimal addition

        int quo = 0;

        int rem = 0;

        int num1 = 10;

        int num2 = 20;

        c.DivideWithRemainder(17, 5, out quo, out rem);

        c.SwapNumbers(ref num1, ref num2);

        double numbers = c.CalculateAverage(14, 15);

        Console.WriteLine("Average of Numbers: " + numbers);

        Console.WriteLine("Power Calculation: " + c.CalculatePower(2,3));

    }

}