popravni-sept-2014-zad6

#include <iostream>
#include <stdexcept>
#include <list>


using namespace std;

template <typename TipP1, typename TipP2>
auto SkalarniProizvod (TipP1 It1, TipP1 It2, TipP2 It3)-> decltype(*It1)
{
    decltype (*It1*(*It3)) sk_pr{0};
    while (It1!=It2) {
        sk_pr+=((*It1)*(*It3));
        It1++;
        It3++;
    }
    return sk_pr;
}
int main () {
list<int> L1{1,2,3,4,5};
list<int> L2{4,5,3,8,7};
cout<<SkalarniProizvod(L1.begin(),L1.end(), L2.begin());

return 0;
}