From cppreference.com
bitset&reset(); (1)(noexcept since C++11)
(constexpr since C++23)bitset&reset(std::size_tpos); (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
if pos does not correspond to a valid bit position.
Example
Run this code
#include<bitset>#include<iostream>intmain(){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 Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR Applied to Behavior as published Correct behavior
C++98 the behavior was undefined if pos does
not correspond to a valid bit position always throws an
exception in this case See also
sets bits to true or given value
(public member function)
toggles the values of bits
(public member function)