Number of bits to represent an arbitrary positive number X

Simple program to find the number of bits required to represent a positive number.

//This program is to find out the number of bits required to represent a positive integer
//Program tested on Microsoft Visual Studio 2008 - Zahid Ghadialy

#include<iostream>
#include <cmath>

using namespace std;

unsigned int TraditionalApproach(const unsigned int& num)
{
  if(num)
  {
    return (int)floor(log((double)num)/log(2.0) + 1.0);
  }
  return 1;
}

unsigned int SimplifiedApproach(const unsigned int& num)
{
  if(num)
  {
    unsigned int tempNum = num;
    unsigned int numOfBits = 0;
    while(tempNum)
    {
      numOfBits++;
      tempNum >>= 1;
    }
    return numOfBits;
  }
  return 1;
}


int main()
{
  //Finding number of bits the traditional way
  cout<<"\n** Traditional Approach **\n";
  cout<<"The number of bits required to represent 0 = "<<TraditionalApproach(0)<<endl;
  cout<<"The number of bits required to represent 1 = "<<TraditionalApproach(1)<<endl;
  cout<<"The number of bits required to represent 15 = "<<TraditionalApproach(15)<<endl;
  cout<<"The number of bits required to represent 16 = "<<TraditionalApproach(16)<<endl;
  cout<<"The number of bits required to represent 75 = "<<TraditionalApproach(75)<<endl;
  cout<<"The number of bits required to represent 125 = "<<TraditionalApproach(125)<<endl;
  cout<<"The number of bits required to represent 130 = "<<TraditionalApproach(130)<<endl;

  cout<<"\n** Simplified Approach **\n";
  cout<<"The number of bits required to represent 0 = "<<SimplifiedApproach(0)<<endl;
  cout<<"The number of bits required to represent 1 = "<<SimplifiedApproach(1)<<endl;
  cout<<"The number of bits required to represent 15 = "<<SimplifiedApproach(15)<<endl;
  cout<<"The number of bits required to represent 16 = "<<SimplifiedApproach(16)<<endl;
  cout<<"The number of bits required to represent 75 = "<<SimplifiedApproach(75)<<endl;
  cout<<"The number of bits required to represent 125 = "<<SimplifiedApproach(125)<<endl;
  cout<<"The number of bits required to represent 130 = "<<SimplifiedApproach(130)<<endl;

  return 0;
}

The output is as follows: