Mega Code Archive
Demonstrate bitwise complement
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#include <iostream>
using std::cout;
#include <iomanip>
using std::endl;
using std::setw;
void displayBits( unsigned );
int main()
{
unsigned number1;
unsigned number2;
unsigned mask;
unsigned setBits;
number1 = 21845;
cout << "\nThe one's complement of\n";
displayBits( number1 );
cout << "is" << endl;
displayBits( ~number1 );
return 0;
}
//Quote from
//C++ How to Program (5th Edition) (How to Program) (Paperback)
//by Harvey & Paul) Deitel & Associates
//Publisher: Prentice Hall; 5 edition (January 5, 2005)
//Language: English
//ISBN-10: 0131857576
//ISBN-13: 978-0131857575
void displayBits( unsigned value ) {
const int SHIFT = 8 * sizeof( unsigned ) - 1;
const unsigned MASK = 1 << SHIFT;
cout << setw( 10 ) << value << " = ";
for ( unsigned i = 1; i <= SHIFT + 1; i++ ) {
cout << ( value & MASK ? '1' : '0' );
value <<= 1;
if ( i 8 == 0 )
cout << ' ';
}
cout << endl;
}
The one's complement of
21845 = 00000000 00000000 01010101 01010101
is
4294945450 = 11111111 11111111 10101010 10101010
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