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bitset::reset

Resets all the bits in a bitset to 0 or resets a bit at a specified position to 0.

bitset<N>& reset( ); 
bitset<N>& reset( 
   size_t _Pos 
);

_Pos

The position of the bit in the bitset to be reset to 0.

A copy of the bitset for which the member function was invoked.

The second member function throws an out_of_range exception if the position specified is greater than the size of the bitset.

// bitset_reset.cpp
// compile with: /EHsc
#include <bitset>
#include <iostream>

int main( )
{
   using namespace std;

   bitset<5> b1 ( 13 );
   cout << "The set of bits in bitset<5> b1(13) is: ( "<< b1 << " )"
        << endl;

   bitset<5> b1r3;
   b1r3 = b1.reset( 2 );
   cout << "The collecion of bits obtained from resetting the\n"
        << " third bit of bitset b1 is: ( "<< b1r3 << " )" 
        << endl;

   bitset<5> b1r;
   b1r = b1.reset( );
   cout << "The collecion of bits obtained from resetting all\n"
        << " the elements of the bitset b1 is: ( "<< b1r << " )"
        << endl;
}
The set of bits in bitset<5> b1(13) is: ( 01101 )
The collecion of bits obtained from resetting the
 third bit of bitset b1 is: ( 01001 )
The collecion of bits obtained from resetting all
 the elements of the bitset b1 is: ( 00000 )

Header: <bitset>

Namespace: std

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