Modernes C++ programmieren

// https://godbolt.org/z/vjTWjfKKz 
#include <vector>
#include <set>
#include <iostream>
using std::vector; using std::set; using std::cout;
using vector_t = vector<unsigned long long>; // Ihr eigener Typalias
int main() {
    vector_t huge{ 12ULL, 10'000'000'000ULL, 9ULL, 0ULL,  };
    vector_t::size_type sz = huge.size();
    vector_t::value_type uiuiui = huge[1];
    for(vector_t::iterator it = huge.begin(); it != huge.end(); ++it)
        *it *= 2; // verdoppeln
    /* sortieren per set */
    set<vector_t::value_type> sortiert{huge.begin(), huge.end()};
    for(vector_t::value_type val : sortiert)
        cout << val << " ";
    cout << "\n";
}