C++ Bitset Library - operator<< Function

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Description

The C++ function std::bitset::operator<< extracts upto N bits from is and stores into another bitset x.

Declaration

Following is the declaration for std::bitset::operator<< function form std::bitset header.

C++98

template<class charT, class traits, size_t N>
basic_istream<charT, traits>&
operator>> (basic_istream<charT,traits>& is, bitset<N>& x);

C++11

template<class charT, class traits, size_t N>
basic_istream<charT, traits>&
operator>> (basic_istream<charT,traits>& is, bitset<N>& x);

Parameters

• is − Character stream to read from.

• x − The bitset to be read.

Return value

Returns the character stream that was operated i.e. is.

Exceptions

If exception occurs all object remains in valid state.

Example

The following example shows the usage of std::bitset::operator<< function.

#include <iostream>
#include <bitset>
#include <sstream>

using namespace std;

int main(void) {

   string s = "1000";
   istringstream stream(s);
   bitset<2> b;

   /* Store first 2 bits */
   stream >> b;

   cout << "b = " << b << endl;

   return 0;
}

Let us compile and run the above program, this will produce the following result −

b = 10