#include <vector>
    #include <algorithm>
    #include <iterator>
    #include <iostream>
 
    struct S
    {
        S() : i(0) { }
        S(int i_) : i(i_) { }
        int i;
    };
 
    int main()
    {
        S a[256] = { 42 };
 
        std::vector<S*> v;
        transform(std::begin(a), std::end(a), std::back_inserter(v), [] (S& s) { return &s; });
 
        std::cout << v.size() << std::endl;
        std::cout << v[0]->i << std::endl;
        std::cout << v[1]->i << std::endl;
    }
 

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