usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text; namespaceConsoleApplication14{ class Temp { public double Fahrenheit(doubleC) { doubleF; F = (9 * C / 5) + 32; Console.WriteLine("Corresponding temperature in degrees Fahrenheit :"+Math.Round(F,2)); return F; } } class Program { static void Main() { ConsoleKeyInfok; do { Tempd = new Temp(); doubleC; Console.Write("enter a temperature in degrees Celsius "); C = double.Parse(Console.ReadLine()); if(C < -999) { Console.Write("Please,enter a temperature in degrees Celsius more then -999 : "); C = double.Parse(Console.ReadLine()); d.Fahrenheit(C); } elsed.Fahrenheit(C); Console.WriteLine("...Press ESC to exit..."); k = Console.ReadKey(true); Console.Clear(); } while(k.Key != ConsoleKey.Escape); Console.ReadLine(); } }}
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