C# .Sign()

The Math.Sign() method is a static method that returns an integer value indicating the sign of a specified number.

Syntax

Math.Sign(number);

Parameters:

• number: The numeric value for which to determine the sign. Supported types include: sbyte, short, int, long, float, double, and decimal.

Return value:

Returns an integer value that indicates the sign of the specified number:

• -1: if the number is negative
• 0: if the number is equal to zero
• 1: if the number is positive

Example: Basic Usage of Math.Sign()

In this example, the sign of various numeric values is determined using the Math.Sign() method and printed to the console:

using System;

public class Example {
  public static void Main () {
    // Example numeric values
    int numInt = -50;
    float numFloat = 0.0f;
    double numDouble = 2.7;
    decimal numDecimal = -0.01m;

    // Determine the sign of each number
    int numIntSign = Math.Sign(numInt);
    int numFloatSign = Math.Sign(numFloat);
    int numDoubleSign = Math.Sign(numDouble);
    int numDecimalSign = Math.Sign(numDecimal);

    // Print the results
    Console.WriteLine($"Math.Sign({numInt}) = {numIntSign}");
    Console.WriteLine($"Math.Sign({numFloat}) = {numFloatSign}");
    Console.WriteLine($"Math.Sign({numDouble}) = {numDoubleSign}");
    Console.WriteLine($"Math.Sign({numDecimal}) = {numDecimalSign}");
  }
}

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This example outputs the following:

Math.Sign(-50) = -1
Math.Sign(0) = 0
Math.Sign(2.7) = 1
Math.Sign(-0.01) = -1

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Codebyte Example

In this example, a random number between -100 and 100 is generated, and its sign is determined using the Math.Sign() method. A message is printed to indicate whether the random number is negative, positive, or zero:

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