feat: Add C# Math.Truncate() entry

Author: SPBasu-win

content/c-sharp/concepts/math-functions/terms/truncate/truncate.md

@@ -0,0 +1,69 @@
+---
+Title: '.Truncate()'
+Description: 'Returns the integer part of a specified number by removing any fractional digits.'
+Subjects:
+  - 'Code Foundations'
+  - 'Computer Science'
+Tags:
+  - 'Methods'
+  - 'Numbers'
+  - 'Arithmetic'
+  - 'Functions'
+CatalogContent:
+  - 'learn-c-sharp'
+  - 'paths/computer-science'
+---
+
+The **`Math.Truncate()`** class method returns the integer part of a specified number by removing any fractional digits.
+
+## Syntax
+
+```pseudo
+Math.Truncate(d);
+The Math.Truncate() method takes one parameter, d, which is the number to truncate (this can be a double or decimal). The method returns the integer part of d (of the same type), except if the value of d equals:
+
+NaN, then it returns NaN.
+
+NegativeInfinity, then it returns NegativeInfinity.
+
+PositiveInfinity, then it also returns PositiveInfinity.
+
+Note: Math.Truncate() always rounds towards zero. This means Truncate(2.8) is 2, and Truncate(-2.8) is -2. This is different from Math.Floor(), which always rounds down (e.g., Math.Floor(-2.8) would be -3).
+
+Example
+The following example demonstrates the Math.Truncate() method with both a positive and a negative double. It highlights how the method rounds towards zero in both cases.
+
+using System;
+
+public class Example {
+  public static void Main(string[] args) {
+    double positiveValue = 12.9;
+    double negativeValue = -4.7;
+
+    Console.WriteLine("Truncating " + positiveValue + " gives: " + Math.Truncate(positiveValue));
+    Console.WriteLine("Truncating " + negativeValue + " gives: " + Math.Truncate(negativeValue));
+  }
+}
+
+This example results in the following output:
+
+Truncating 12.9 gives: 12
+Truncating -4.7 gives: -4
+
+Codebyte Example
+The following example is runnable and returns the truncated value of the given number:
+using System;
+
+public class Example {
+  public static void Main(string[] args) {
+    // Number to truncate
+    double number = 2.71828;
+
+    Console.WriteLine("The truncated value of " + number + " is: " + Math.Truncate(number));
+
+    // Example with a negative number
+    double negativeNumber = -3.14159;
+    Console.WriteLine("The truncated value of " + negativeNumber + " is: " + Math.Truncate(negativeNumber));
+  }
+}
+```