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operator<<,>>(std::bitset)

From cppreference.com
template <class CharT, class Traits, size_t N>

std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os,

                                              const bitset<N>& x);
(1)
template <class CharT, class Traits, size_t N>

std::basic_istream<CharT, Traits>& operator>>(std::basic_istream<CharT, Traits>& is,

                                              bitset<N>& x);
(2)

Inserts or extracts a bitset from a character stream.

1) Writes the bitset x to the character stream os.

2) Extracts up to N characters from is and stores the characters in the bitset x.

Characters are extracted until either

  • N characters have been read,
  • end-of-file occurs in is, or
  • the next character is neither is.widen('0') nor is.widen('1').

If no characters are extracted, is.setstate(ios_base::failbit) is called.

Contents

[edit] Parameters

os - the character stream to write to
is - the character stream to read from
x - the bitset to be read or written

[edit] Return value

The character stream that was operated on, e.g. os or is.

[edit] Example

#include <bitset>
#include <iostream>
#include <sstream>
 
int main()
{
    std::string bit_string = "001101";
    std::istringstream bit_stream(bit_string);
 
    std::bitset<3> b1;
    bit_stream >> b1;
    std::cout << b1 << '\n';
    std::bitset<8> b2;
    bit_stream >> b2;
    std::cout << b2 << '\n';
}

Output:

001
00000101

[edit] See also

performs binary shift left and shift right
(public member function) [edit]