29/11/19/ C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {

            // Random rnd = new Random();

            // int a = rnd.Next(2, 13);
            // int b = rnd.Next(2, 13);
            // int c = rnd.Next(2, 13);
            // int d = rnd.Next(2, 13);
            // int e = rnd.Next(2, 13);
            // int f = rnd.Next(2, 13);




            //int dev = (a * e - b * d);


            // if(dev == 0)
            // {
            //     Console.WriteLine("uncorrect answer");
            // }
            // else
            // {
            //     int x = (c * e - b * f);
            //     int y = (a * f - c * d);
            //     Console.WriteLine("(" + x + ", " + y + ")");
            // }

            /****************************************************************************************/
            //Random rnd = new Random();

            //int mtrNum = rnd.Next(1, 11);

            //if(mtrNum == 1)
            //{
            //    Console.WriteLine("one");
            //}
            //else if (mtrNum == 2)
            //{
            //    Console.WriteLine("Two");
            //}
            //else if(mtrNum == 3){
            //    Console.WriteLine("Three");
            //}
            //else if (mtrNum == 4)
            //    {
            //    Console.WriteLine("four");
            //     }

            //else if (mtrNum == 5)
            //{
            //    Console.WriteLine("five");
            //}
            //else if (mtrNum == 6)
            //{
            //    Console.WriteLine("six");
            //}
            //else
            //        {
            //    Console.WriteLine("un correct number");
            //}
            /********************************************************************************/
            //Console.WriteLine("enter the name if the anumal deer / turtle");

            //String animalName = Console.ReadLine();

            //Console.WriteLine("the animal is :" + animalName);

            //Console.WriteLine("enter the running time for" + animalName);

            //int runSpd = int.Parse(Console.ReadLine());

            //if(animalName == "deer")
            //{

            //}




            /*******************************************************************************/
            int a, b, c;
            int root;

            Console.WriteLine("enter the value of a");
            a = int.Parse(Console.ReadLine());

            Console.WriteLine("enter the value of b");
            b = int.Parse(Console.ReadLine());

            Console.WriteLine("enter the value of c");
            c = int.Parse(Console.ReadLine());

            double delta = Math.Pow(b, 2) - 4 * a * c;
            Console.WriteLine("{0}X^2 + {1}X + {2}",a,b,c);

           if (delta< 0)
                Console.WriteLine("no solution");

           else if (delta ==0)
            {
                double solution = (double)(-b) / (2 * 1);
                Console.WriteLine("One Solution");
                Console.WriteLine("The solution is:" + solution);
            }
            else
            {
                double x1 = (double)((-b) + Math.Sqrt(delta)) / (2 * a);
                double x2 = (double)((-b) - Math.Sqrt(delta)) / (2 * a);

                Console.WriteLine("Two solution");
                Console.WriteLine("The solution is: x1:{0} , x2:{1}" ,x1 ,x2);
            }


        }
    }
}