zeros and ones to a file (huffman helper)

cpp_string_to_binary_file

#include <iostream>
#include <fstream>
#include <vector>

// Write a binary "string" to a file as binary. Used in conjunction with a previous Huffman encoding project.


using namespace std;

int main(){
        ofstream fout;
        fout.open("output.dat",ios::binary);
        std::vector<bool> a;
        string Huffman = "00110000001100010011001000110011";

        for(int i=0;i<Huffman.size();i++){
                a.push_back(Huffman[i]-48);
        }


        for (std::vector<bool>::iterator it = a.begin(); it != a.end();)
        {
                char b = 0;
                for (int i = 0; i < 8*sizeof(b); ++i)
                {
                        b |= (*it & 1) << (8*sizeof(b) - 1 - i);
                        ++it;
                }
                fout<<b;
                //flush 'b'
        }

        return 0;
}