Question

Write the functions to add, subtract, multiply and divide two doubles. The function returns the result on the operation. Write a program to test your functions. In visual studios console application C#.

Answer 1

using System;
using System.Security.AccessControl;

public class MathOperations
{
    public static double add(double n1, double n2)
    {
        return n1 + n2;
    }
    
    public static double subtract(double n1, double n2)
    {
        return n1 - n2;
    }
    
    public static double multiply(double n1, double n2)
    {
        return n1 * n2;
    }
    
    public static double divide(double n1, double n2)
    {
        return n1 / n2;
    }
    
    public static void Main(string[] args)
    {
        double n1, n2;
        Console.Write("Enter first number: ");
        n1 = Convert.ToDouble(Console.ReadLine());
        Console.Write("Enter second number: ");
        n2 = Convert.ToDouble(Console.ReadLine());
        Console.WriteLine(n1 + " + " + n2 + " = " + add(n1, n2));
        Console.WriteLine(n1 + " - " + n2 + " = " + subtract(n1, n2));
        Console.WriteLine(n1 + " * " + n2 + " = " + multiply(n1, n2));
        Console.WriteLine(n1 + " / " + n2 + " = " + divide(n1, n2));
    }
}