Compilare: main.cpp: In function 'int main()': main.cpp:133:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 133 | for (int i = 0; i < stiva.size(); i ++) /// pentru fiecare 2 puncte adiacente de pe infasuratoare (care determina un segment AB) | ~~^~~~~~~~~~~~~~ main.cpp:140:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 140 | for (int j = 0; j < stiva.size(); j ++) /// parcurgem restul punctelor (fie acestea C) si calculam: | ~~^~~~~~~~~~~~~~ main.cpp: In function 'int cross_prod(point, point, point)': main.cpp:40:1: warning: control reaches end of non-void function [-Wreturn-type] 40 | } | ^