std::bitset<N>::set

 

C++

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Technical Specifications

 

Utilities library

Type support (basic types, RTTI, type traits)
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initializer_list (C++11)
bitset
hash (C++11)
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rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=
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std::bitset

Member types

bitset::reference

Member functions

bitset::bitset

bitset::operator==bitset::operator!=

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)

 

	(1)
bitset<N>& set();			(until C++11)
bitset<N>& set() noexcept;			(since C++11)
bitset<N>& set( std::size_t pos, bool value = true );		(2)

Sets all bits to true or to specified value.

1) Sets all bits to true.

2) Sets the bit at position pos to the value value.

Parameters

pos	-	the position of the bit to set (least significant to most significant)
value	-	the value to set the bit to

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 <iostream>
#include <bitset>
 
int main()
{
    std::bitset<8> b;
    for (size_t i = 1; i < b.size(); i += 2) {
        b.set(i);
    }
    std::cout << b << '\n';
}

Output:

10101010

See also

reset	sets bits to false (public member function)
flip	toggles the values of bits (public member function)