Bitwise AND, inclusive OR, exclusive OR and complement operators. - C++ Operator

C++ examples for Operator:Bit Operator

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Description

Bitwise AND, inclusive OR, exclusive OR and complement operators.

Demo Code

#include <iostream> 
#include <iomanip> 
using namespace std; 

void displayBits( unsigned ); // prototype 

int main() /*  www. j a v a 2  s  .com*/
{ 
   unsigned number1; 
   unsigned number2; 
   unsigned mask; 
   unsigned setBits; 

   // demonstrate bitwise & 
   number1 = 217999999; 
   mask = 1; 
   cout << "The result of combining the following\n"; 
   displayBits( number1 ); 
   displayBits( mask ); 
   cout << "using the bitwise AND operator & is\n"; 
   displayBits( number1 & mask ); 

   // demonstrate bitwise | 
   number1 = 15; 
   setBits = 221; 
   cout << "\nThe result of combining the following\n"; 
   displayBits( number1 ); 
   displayBits( setBits ); 
   cout << "using the bitwise inclusive OR operator | is\n"; 
   displayBits( number1 | setBits ); 

   // demonstrate bitwise exclusive OR 
   number1 = 119; 
   number2 = 159; 
   cout << "\nThe result of combining the following\n"; 
   displayBits( number1 ); 
   displayBits( number2 ); 
   cout << "using the bitwise exclusive OR operator ^ is\n"; 
   displayBits( number1 ^ number2 ); 

   // demonstrate bitwise complement 
   number1 = 21845; 
   cout << "\nThe one's complement of\n"; 
   displayBits( number1 ); 
   cout << "is" << endl; 
   displayBits( ~number1 ); 
}

// display bits of an unsigned integer value 
void displayBits( unsigned value ) 
{ 
   const int SHIFT = 8 * sizeof( unsigned ) - 1; 
   const unsigned MASK = 1 << SHIFT; 

    cout << setw( 10 ) << value << " = "; 

    // display bits 
    for ( unsigned i = 1; i <= SHIFT + 1; ++i ) 
    { 
       cout << ( value & MASK ? '1' : '0' ); 
       value <<= 1; // shift value left by 1 

       if ( i % 8 == 0 ) // output a space after 8 bits 
           cout << ' '; 
    }

    cout << endl; 
}

Result


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