C++ Bitset Library - to_ullong() Function

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Description

The C++ function std::bitset::to_ullong() convert bitset to unsigned long long.

Declaration

Following is the declaration for std::bitset::to_ullong() function form std::bitset header.

C++98

unsigned long long to_ullong() const;

Parameters

None

Return value

Returns bitset as unsigned long long number.

Exceptions

No change in bitset if exception is thrown.

Example

The following example shows the usage of std::bitset::to_ullong() function.

#include <iostream>
#include <bitset>
#include <typeinfo>

using namespace std;

int main(void) {

   bitset<4> b("1010");;
   auto result = b.to_ullong();

   cout << "Decimal representation of " << b << " = " << result << endl;
   return 0;
}

Let us compile and run the above program, this will produce the following result −

Decimal representation of 1010 = 10