C++ Tutorial/bitset/bitset and or
Версия от 14:21, 25 мая 2010; (обсуждение)
Содержание
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;
}