bitset C++

<bitset>

What is the size of char datatype in C++?
What is the size of bool datatype in C++?
Both take 1byte to store a value. Yes, bool datatype also takes 1byte.

Bitset is a standard library available in c++ which allows us to store data in bitwise. The good thing was we can access each bit separately in a bitset as like elements in an array. Only change was we access them from the backside.

Eg: g = 00111011
then g[0]=g[1]=g[3]=g[4]=g[5]=1
and g[2]=g[6]=g[7]=0

It can be constructed[accepts] from Integer and Binary strings only. How many lines of code you write to convert a decimal to binary? .... It can be done in just 2 lines using the bitset.

#include <bitset>
#include <iostream>
using namespace std;
int main()
{
  bitset<8> vin;
  //here 'vin' will have all 8 bits unset as zero
  // Value 8 inside angle brace denotes number of bits it can also be 16 or 32

  bitset<8> tam(5);
  //It will store number 5 as a bit stream in 'tam'

  cout << vin.any() << endl;
  cout << tam.any() << endl;
  //It chk wheather there is atleast one 1 in the number; if so return 1 else 0

  cout<<vin.all()<<endl;
  cout<<tam.all()<<endl;
  //It chk wheather all bits are set as 1; if so return 1 else 0

  cout<<vin.none()<<endl;
  //It returns true, if none of the bit is set as 1

  cout<<"Flipping all :"<<tam.flip()<<endl;
  //All bits will be fliped

  cout<<"Flipping 3rd bit alone :"<<tam.flip(3)<<endl;
  //3rd bit alone fliped
  //changes are made permanent in source

  cout<<"Set all :"<<vin.set()<<endl;
  cout<<"Reset all :"<<vin.reset()<<endl;
  cout<<"Set 5th bit alone :"<<vin.set(5)<<endl;
  cout<<"Reset 5th bit alone :"<<vin.reset(5)<<endl;

  cout<<"count 1's in bitset :"<<vin.count() <<endl;
  //count returns number of 1 bits in bitset

  cout<<"Size of inb :"<<vin.size()<<endl;
  //no. of bits in vin

  cout<<"count 0's in bitset :"<<vin.size() -vin.count() <<endl;
  //Subtracting the count of 1's from total bits

  cout<<"Testing wheather 3rd bit is set :"<<tam.test(3)<<endl;
  //returns 1 if it is set else 0

  return 0;
}

Similarly,
vin.to_ulong() converts bitset to unsigned long integer.
vin.to_ullong() converts bitset to unsigned long long integer.
vin.to_string() converts bitset to unsigned long long integer.

Done.