C++ <bitset> - count() Function
The C++ bitset::count function returns the number of bits in the bitset that are set (i.e., which has a value of 1).
Syntax
size_t count() const;
size_t count() const noexcept;
Parameters
No parameter is required.
Return Value
Number of bits in the bitset that are set.
Exception
Throws overflow_error, if the bitset size is too big to be represented by the return type.
Example:
In the example below, the bitset::count function is used to find out the number of bits in the given bitset which are set.
#include <iostream>
#include <bitset>
using namespace std;
int main (){
bitset<6> bset("110011");
cout<<"In bset, "<<bset.count()<<" bits are set.\n";
return 0;
}
The output of the above code will be:
In bset, 4 bits are set.
❮ C++ <bitset> Library
