C#中的Math.Sign()方法用于返回一个整数,该整数指示数字的符号。
Math.Sign()重载以下方法-
Math.Sign(Int16) Math.Sign(Int32) Math.Sign(Int64) Math.Sign(SByte) Math.Sign(Single) Math.Sign(Decimal) Math.Sign(Double)
现在让我们看一个实现Math.Sign()方法的示例-
using System; public class Demo { public static void Main(){ short val1 = 1; int val2 = 20; long val3 = -3545465777; Console.WriteLine("Short Value = " + val1); Console.WriteLine("Sign (Short Value) = " + getSign(Math.Sign(val1))); Console.WriteLine("Int32 value = " + val2); Console.WriteLine("Sign (Short Value) = " + getSign(Math.Sign(val2))); Console.WriteLine("Long value = " + val3); Console.WriteLine("Sign (Long Value) = " + getSign(Math.Sign(val3))); } public static String getSign(int compare){ if (compare == 0) return "等于零!"; else if (compare < 0) return "小于零!"; else return "大于零!"; } }
输出结果
这将产生以下输出-
Short Value = 1 Sign (Short Value) = 大于零! Int32 value = 20 Sign (Short Value) = 大于零! Long value = -3545465777 Sign (Long Value) = 小于零!
让我们来看另一个实现Math.Sign()方法的示例-
using System; public class Demo { public static void Main(){ Decimal val1 = 20m; Double val2 = -35.252d; Console.WriteLine("Decimal Value = " + val1); Console.WriteLine("Sign (Decimal Value) = " + getSign(Math.Sign(val1))); Console.WriteLine("Double value = " + val2); Console.WriteLine("Sign (Double Value) = " + getSign(Math.Sign(val2))); } public static String getSign(int compare){ if (compare == 0) return "等于零!"; else if (compare < 0) return "小于零!"; else return "大于零!"; } }
输出结果
这将产生以下输出-
Decimal Value = 20 Sign (Decimal Value) = 大于零! Double value = -35.252 Sign (Double Value) = 小于零!