fig16_05.cpp

经典vc教程的例子程序

// Fig. 16.5: fig16_05.cpp
// Printing an unsigned integer in bits 
#include <iostream.h>
#include <iomanip.h>

void displayBits( unsigned );

int main()
{
   unsigned x;

   cout << "Enter an unsigned integer: ";
   cin >> x;
   displayBits( x );
   return 0;
}

void displayBits( unsigned value )
{
   unsigned c, displayMask = 1 << 15;

   cout << setw( 7 ) << value << " = ";

   for ( c = 1; c <= 16; c++ ) {
      cout << ( value & displayMask ? '1' : '0' );
      value <<= 1;

      if ( c % 8 == 0 ) 
         cout << ' ';
   }

   cout << endl;
}