C++ Bitset Library - operator<< Function

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
basic_istream&
operator>> (basic_istream& is, bitset& x);

C++11

template
basic_istream&
operator>> (basic_istream& is, bitset& 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 
#include 
#include 

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