bitset.cpp

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#include <bitset>     // for bitset
#include <iostream>   // for cout, endl
 
#include <examples.h>
 
int main ()
{
    // Construct a bitset with 40 elements all initialized to 0.
    std::bitset<40> b;
 
    // Bitwise OR the bitset with 5.
    b |= 5;
 
    // Write bitset to the standard output.
    std::cout << "         4....:....3....:....2....:....1....:....0\n"
              << "b = 5:    " << b << '\n';
 
    // Invert the bitset.
    b = ~b;
 
    std::cout << "b = ~b:   " << b << '\n'
              << "b <<= " << b.count () << ": ";
 
    // Shift the bitset left by the number of bits set.
    b <<= b.count ();
 
    // Convert it to a string and write it out again.
    std::cout << b.to_string () << '\n';
 
    // Return 0 on success.
    return !(1 == b.count () && 1UL == (b >> (b.size () - 1)).to_ulong ());
}