nhi phan sang thap phan

// Bin2Dec.cpp : Defines the entry point for the console application.
//
/***
** Chuong Trinh doi 32 bit thanh so nguyen
** Chua thuc hien kiem tra day bit nhap.
** Yeu cau sinh vien xu ly neu nhap it hon 32 bit.
** Bit o vi tri so 0 la bit cao nhat
***/
#include "stdafx.h"
#include "conio.h"
#include "stdio.h"
#include "string.h"
int Bin2Dec (const char arrBit[]);
int _tmain(int argc, _TCHAR* argv[])
{
   //Test chuong trinh
   char arrBit[33];
   memset((void *)arrBit,0,33);
   gets(arrBit);
   int n = Bin2Dec(arrBit);
   printf ("%d\n",n);
   return 0;
}
int Bin2Dec (const char arrBit[])
{
   int n = 0;
   for (int i = 0;i<8;i++)
      n = (n << 1) | (arrBit[i] - 48);
   return n;
}