C++ bitset count() Function

C++ bitset count() function is used to count the number of set bits in the binary representation of a number.

Syntax

Parameter

It does not take any parameter.

Return value

It returns the number of set bits in an integer value.

Example 1

#include <iostream>
#include <bitset>
using namespace std;
int main()
{
bitset<4> b1(string("1100"));
int result=b1.count();
cout<<b1 << " has" <<' ' << result <<" bits";
return 0;
}

Output:

1100 has 2 bits

Example 2

#include <iostream>
#include <bitset>
using namespace std;
int main()
{
bitset<4> b1(16);
bitset<4> b2(18);
int result=b1.count();
int result1=b2.count();
cout<<b1 << " has" <<' ' << result <<" set bits" << '\n';
cout<<b2 << " has" <<' ' << result1 <<" set bits";
return 0;
}

Output:

0000 has 0 set bits
0010 has 1 set bits

Next TopicC++ bitset

← prev next →

Help Others, Please Share

Javatpoint Services

JavaTpoint offers too many high quality services. Mail us on [email protected], to get more information about given services.

Website Designing
Website Development
Java Development
PHP Development
WordPress
Graphic Designing
Logo
Digital Marketing
On Page and Off Page SEO
PPC
Content Development
Corporate Training
Classroom and Online Training
Data Entry

Training For College Campus

JavaTpoint offers college campus training on Core Java, Advance Java, .Net, Android, Hadoop, PHP, Web Technology and Python. Please mail your requirement at [email protected].
Duration: 1 week to 2 week

^{Like/Subscribe us for latest updates or newsletter}

C++ Bitset Function