Compilare: main.cpp: In function 'int main()': main.cpp:61:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<point>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(int i=0;i<st.size();i++){ | ~^~~~~~~~~~ main.cpp:40:12: warning: unused variable 'x' [-Wunused-variable] 40 | double x,y; | ^ main.cpp:40:14: warning: unused variable 'y' [-Wunused-variable] 40 | double x,y; | ^