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bitset::flip

Toggles the value of all the bits in a bitset or toggles a single bit at a specified position.

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

Parameters

  • _Pos
    The position of the bit whose value is to be toggled.

Return Value

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

Remarks

The second member function throws an out_of_range exception if the position specified as a parameter is greater than the size N of the bitset<N> whose bit was toggled.

Example

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

int main( )
{
   using namespace std;
   bitset<5> b1 ( 6 );

   cout << "The collection of bits in the original bitset is: ( "
        << b1 << " )" << endl;

   bitset<5> fb1;
   fb1 = b1.flip ( );

   cout << "After flipping all the bits, the bitset becomes: ( "
        << fb1 << " )" << endl;
   
   bitset<5> f3b1;
   f3b1 = b1.flip ( 3 );

   cout << "After flipping the fourth bit, the bitset becomes: ( "
        << f3b1 << " )" << endl << endl;

   bitset<5> b2;
   int i;
   for ( i = 0 ; i <= 4 ; i++ )
   {
      b2.flip(i);
      cout << b2 << "  The bit flipped is in position "
           << i << ".\n";
   }
}

The collection of bits in the original bitset is: ( 00110 )
After flipping all the bits, the bitset becomes: ( 11001 )
After flipping the fourth bit, the bitset becomes: ( 10001 )

00001  The bit flipped is in position 0.
00011  The bit flipped is in position 1.
00111  The bit flipped is in position 2.
01111  The bit flipped is in position 3.
11111  The bit flipped is in position 4.

Requirements

Header: <bitset>

Namespace: std

See Also

Concepts

bitset Class

bitset Members