C# program to count total bits in a number

Let us say the number we have is 12. We have declared and initialized a uint variable by assigning a decimal literal,

uint val = 12;

The binary representation of 12 is −

1100

The bits above is 4, therefore to find the total bits, use the Math.log() method −

uint res = (uint)Math.Log(val , 2.0) + 1;

Example

You can try to run the following code to count total bits in a number.

Live Demo

using System;
public class Demo {
   public static void Main() {
      uint val = 12; // 1100 in binary
      uint res = (uint) Math.Log(val, 2.0) + 1;
      // 1100 has 4 bits
      Console.WriteLine("Total bits: " + res);
   }
}

Output

Total bits: 4