Compilare: main.cpp: In instantiation of 'SegmentTree<T>::SegmentTree(std::vector<T>&, SegmentTree<T>::functionType) [with T = int; SegmentTree<T>::functionType = int (*)(int, int)]': main.cpp:115:35: required from here main.cpp:43:13: warning: 'SegmentTree<int>::num_elem' will be initialized after [-Wreorder] int num_elem; ^~~~~~~~ main.cpp:42:19: warning: 'std::vector<int> SegmentTree<int>::st' [-Wreorder] vector<T> st; ^~ main.cpp:24:9: warning: when initialized here [-Wreorder] SegmentTree(vector<T> &a, functionType _f): ^~~~~~~~~~~