Consecutive Bits

#include <stdio.h>

void printHexAndBits(unsigned num){
  printf("%x\t%u\t",num,num);
  int i=1;
  for ( unsigned mask = ~( ~0u >> 1 ); mask ; mask >>= 1, i++ ){
    if ( num & mask){
      putchar('1');
    }
    else {
      putchar('0');
    }

    if (i%4==0){
      putchar(' ');
    }
  }
  putchar('\n');
}

unsigned consecutiveBits(unsigned num){
  unsigned segments=1;
  unsigned bitSegment = 1 - (num & 1);
  unsigned bitNew;

  for ( ; num ; num>>=1 ){
    bitNew = num & 1;
    if (bitNew != bitSegment){
      bitSegment = 1 - bitSegment;
      segments++;
    }
  }

  return segments;
}

int main(){
  unsigned n=0xd3f3;
  printHexAndBits(n);
  printf("%u",consecutiveBits(n));
}