bitsChal2, using object oriented method

#include <iostream>

using namespace std;

class bits{
    unsigned int value;
public:
    bits(unsigned int val){
        value = val;
    }
    static bool formatted;  // by default false,  if true, then bits are shown 4 digit at a time...
    ostream& print(ostream& os) const{
        unsigned m = 1 << (sizeof(value)*8 - 1);
        unsigned i = 1;
        while(m){
            os<<!!(value & m) ? '1' : '0';
            if (formatted){
                i == 4 ? os<<' ', i = 1 : i++;
            }
            m >>= 1;
        }
        return os;
    }
    ~bits(){
        value = 0;
    }
};
ostream& operator<<(ostream& os, const bits& from){
    return from.print(os);
}
bool bits::formatted = false;
int main(){
    char A = 0x5c;
    char B = 0x95;
    char C = 0;
    cout<<bits(A)<<endl;  //0000101010101010
    bits::formatted = true;
    cout<<bits(B)<<endl;  //0000 0011 0000 1111

    return 0;
}