Here is a program that reads in a temperature given in degrees Centigrade and outputs the corresponding value in degrees Fahrenheit:

namespace ConsoleConvert
{
    using System;
    using System.Threading;
    public class MyClass
    {
        public static void Main()
        {
            Console.Write("Centigrade value: ");
            string tCentigradeString = Console.ReadLine();
            double tCentigrade = double.Parse(tCentigradeString);
            double tFahrenheit = 32 + tCentigrade*9/5;
            Console.WriteLine("Fahrenheit value: " + tFahrenheit);
            Thread.Sleep(10000);
        }
    }
}