Memory Print of an integer in C, C++

Here is a small program to demo the memory print of an integer value :

#include <iostream>
#include <conio.h>
#include <bitset>

using namespace std;

int GetDecimalNumber(char *data)
{
  int len = strlen(data) - 1;
  int result = 0;

  while(len >= 0)
  {
    if (*data == '1')    
      result += pow(2.0, len);

    ++data;
    --len;
  }

  return result;
}

string binaryReprentation(int num)
{
  return bitset<CHAR_BIT>(num).to_string();
}

void main()
{
  char *data = "00010000000000001101110101101101";
  int num = GetDecimalNumber(data);
  int *numPtr = &num;

  char *ptr = reinterpret_cast<char *>(numPtr);

  cout << "Actual Data  : " << data << endl;
  cout << "Memory Print : ";

  for (int index = 0; index < sizeof(num); ++index)
  {
    unsigned char byte = *(ptr + index);
    cout << binaryReprentation((unsigned)byte);
  }

  _getch();
}

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