#include <iostream>
#include <string>
#include <string.h>

void pbin(int n)
{ unsigned int mask = 1<<(8*sizeof(int)-1);
  while (mask != 0)
  { if (n & mask)
      cout << "1";
    else
      cout << "0";
    mask >>= 1; }
  cout << "\n"; }

void main()
{ pbin(10);
  pbin(64);
  pbin(0);
  pbin(-3);
  int a=2053;
  int b=65537;
  float c=1.25;
  int d=13;
  char e[12];
  int f=-5;
  strcpy(e, "ABCDEFGHIJK");
  cout << "a is at " << (unsigned int)&a << "\n";
  cout << "b is at " << (unsigned int)&b << "\n";
  cout << "c is at " << (unsigned int)&c << "\n";
  cout << "d is at " << (unsigned int)&d << "\n";
  cout << "e is at " << (unsigned int)e << "\n";
  cout << "f is at " << (unsigned int)&f << "\n"; }