#include <iostream>
#include <string>
#include <vector>
using namespace std;
 
int main() {
    vector<unsigned char> some_vector{ 'H', 'e', 'l', 'l', 'o' };
    size_t i = 0;
    size_t j = 5;
 
    // using a char* pointer and a size...
    std::string tmp1( reinterpret_cast<char*>(&some_vector[i]), j-i );
    cout << tmp1 << endl;
 
    // using char* pointers as iterators...
    std::string tmp2( &some_vector[i], &some_vector[j] );
    cout << tmp2 << endl;
 
    // using vector iterators...
    std::string tmp3( some_vector.begin()+i, some_vector.begin()+j );
    cout << tmp3 << endl;
 
    return 0;
}

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