C++ Tutorial/bitset/bitset and or — различия между версиями

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Текущая версия на 10:31, 25 мая 2010

Bitset "and", and shift operators

#include <bitset>
#include <iostream>
using namespace std;
int main(int argc, char** argv)
{
  string str1 = "0011001100";
  string str2 = "0000111100";
  bitset<10> bitsOne(str1), bitsTwo(str2);
  bitset<10> bitsThree = bitsOne & bitsTwo;
  cout << bitsThree << endl;
  bitsThree <<= 4;
  cout << bitsThree << endl;
  return (0);
}

Or fields in bitset

#include <bitset>
#include <iostream>
using namespace std;
int main( ){
   const int num_lights = 15;
   const bitset<num_lights> outside( 0xf );
   const bitset<num_lights> inside( 0xff0 );
   const bitset<num_lights> driveway( 0x7000 );
   bitset<num_lights> lights;
   cout << lights;
   lights |= outside;
   cout  << lights;
}

Result of AND between the two sequences

#include <bitset>
#include <string>
#include <iostream>
int main ()
{
    using namespace std;
    // A bitset to hold 8-bits
    bitset <8> eightBits;
    cout << "Enter a 8-bit sequence: ";
    // Store user-supplied sequence into the bitset
    cin >> eightBits;
    cout << endl;
    // another 8-bit sequence to perform bitwise-ops against the first
    bitset <8> eightMoreBits;
    cout << "Enter another 8-bit sequence: ";
    cin >> eightMoreBits;
    cout << endl;
    cout << eightBits << " & " << eightMoreBits << " = "
                      << (eightBits & eightMoreBits)    // bitwise AND
                      << endl;

    return 0;
}

Result of OR between the two sequences

#include <bitset>
#include <string>
#include <iostream>
int main ()
{
    using namespace std;
    // A bitset to hold 8-bits
    bitset <8> eightBits;
    cout << "Enter a 8-bit sequence: ";
    // Store user-supplied sequence into the bitset
    cin >> eightBits;
    cout << endl;

    // another 8-bit sequence to perform bitwise-ops against the first
    bitset <8> eightMoreBits;
    cout << "Enter another 8-bit sequence: ";
    cin >> eightMoreBits;
    cout << endl;
    cout << eightBits << " | " << eightMoreBits << " = "
                      << (eightBits | eightMoreBits)    // bitwise OR
                      << endl;
    return 0;
}

Result of XOR between the two sequences

#include <bitset>
#include <string>
#include <iostream>
int main ()
{
    using namespace std;
    // A bitset to hold 8-bits
    bitset <8> eightBits;
    cout << "Enter a 8-bit sequence: ";
    // Store user-supplied sequence into the bitset
    cin >> eightBits;
    cout << endl;
    // another 8-bit sequence to perform bitwise-ops against the first
    bitset <8> eightMoreBits;
    cout << "Enter another 8-bit sequence: ";
    cin >> eightMoreBits;
    cout << endl;
    cout << eightBits << " ^ " << eightMoreBits << " = "
                      << (eightBits ^ eightMoreBits)    // bitwise XOR
                      << endl;
    return 0;
}
Источник — «http://cppe.ru/index.php?title=C%2B%2B_Tutorial/bitset/bitset_and_or&oldid=2991»