std::bitset<N>::reset

 

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std::bitset

Member types
bitset::reference
Member functions
bitset::bitset
bitset::operator==bitset::operator!= (until C++20)
Element access
bitset::operator[]
bitset::test
bitset::allbitset::anybitset::none (C++11)
bitset::count
Capacity
bitset::size
Modifiers
bitset::operator&=bitset::operator|=bitset::operator^=bitset::operator~
bitset::operator<<=bitset::operator>>=bitset::operator<<bitset::operator>>
bitset::set
bitset::reset
bitset::flip
Conversions
bitset::to_string
bitset::to_ulong
bitset::to_ullong (C++11)
Non-member functions
operator&operator|operator^	operator<<operator>>
Helper classes
std::hash (C++11)

 

bitset& reset();	(1)	(noexcept since C++11) (constexpr since C++23)
bitset& reset( std::size_t pos );	(2)	(constexpr since C++23)

Sets bits to false.

1) Sets all bits to false

2) Sets the bit at position pos to false.

Parameters

pos

-

the position of the bit to set

Return value

*this

Exceptions

2) Throws std::out_of_range if pos does not correspond to a valid position within the bitset.

Example

Run this code

#include <bitset>
#include <iostream>
 
int main()
{
    std::bitset<8> b(42);
    std::cout << "Bitset is         " << b << '\n';
    b.reset(1);
    std::cout << "After b.reset(1): " << b << '\n';
    b.reset();
    std::cout << "After b.reset():  " << b << '\n';
}

Output:

Bitset is         00101010
After b.reset(1): 00101000
After b.reset():  00000000

See also

set	sets bits to true or given value (public member function)
flip	toggles the values of bits (public member function)