C# Examples
Dave Braunschweig
Objects
// This program creates instances of the Temperature class to convert Celsius // and Fahrenheit temperatures. // // References: // https://www.mathsisfun.com/temperature-conversion.html // https://en.wikibooks.org/wiki/C_Sharp_Programming using System; public class Objects { public static void Main(String[] args) { Temperature temp1 = new Temperature(celsius: 0); Console.WriteLine("temp1.Celsius = " + temp1.Celsius.ToString()); Console.WriteLine("temp1.Fahrenheit = " + temp1.Fahrenheit.ToString()); Console.WriteLine(""); temp1.Celsius = 100; Console.WriteLine("temp1.Celsius = " + temp1.Celsius.ToString()); Console.WriteLine("temp1.Fahrenheit = " + temp1.Fahrenheit.ToString()); Console.WriteLine(""); Temperature temp2 = new Temperature(fahrenheit: 0); Console.WriteLine("temp2.Fahrenheit = " + temp2.Fahrenheit.ToString()); Console.WriteLine("temp2.Celsius = " + temp2.Celsius.ToString()); Console.WriteLine(""); temp2.Fahrenheit = 100; Console.WriteLine("temp2.Fahrenheit = " + temp2.Fahrenheit.ToString()); Console.WriteLine("temp2.Celsius = " + temp2.Celsius.ToString()); } } // This class converts temperature between Celsius and Fahrenheit. // It may be used by assigning a value to either Celsius or Fahrenheit // and then retrieving the other value, or by calling the ToCelsius or // ToFahrenheit methods directly. public class Temperature { double _celsius; double _fahrenheit; public double Celsius { get { return _celsius; } set { _celsius = value; _fahrenheit = ToFahrenheit(value); } } public double Fahrenheit { get { return _fahrenheit; } set { _fahrenheit = value; _celsius = ToCelsius(value); } } public Temperature(double? celsius = null, double? fahrenheit = null) { if (celsius.HasValue) { this.Celsius = Convert.ToDouble(celsius); } if (fahrenheit.HasValue) { this.Fahrenheit = Convert.ToDouble(fahrenheit); } } public double ToCelsius(double fahrenheit) { return (fahrenheit - 32) * 5 / 9; } public double ToFahrenheit(double celsius) { return celsius * 9 / 5 + 32; } }
Output
temp1.Celsius = 0 temp1.Fahrenheit = 32 temp1.Celsius = 100 temp1.Fahrenheit = 212 temp2.Fahrenheit = 0 temp2.Celsius = -17.7777777777778 temp2.Fahrenheit = 100 temp2.Celsius = 37.7777777777778