Print to binary code

/* Print to binary code */
void PrintToBin(int i)
{
  int bits = sizeof(int)*8;
  unsigned int flag = 1;
  int index;

  for ( index = bits-1; index >= 0; index-- ) {
    if ( i & ( flag << index ) ) printf("%d", 1);
    else printf("%d", 0);
  }
}