Compilare: user.cpp: In function ‘void infasuratoare_Convexa()’: user.cpp:135:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < inter.size(); ++ i) { ^ user.cpp:146:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(j < inter.size()) { ^ user.cpp: In function ‘void arie_Inter()’: user.cpp:158:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i < st.size(); ++ i) { ^ user.cpp: In function ‘int main()’: user.cpp:43:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arie.in", "r", stdin); ^ user.cpp:44:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arie.out", "w", stdout); ^ user.cpp: In function ‘void citire_Poligon1()’: user.cpp:60:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:63:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &x, &y); ^ user.cpp: In function ‘void citire_Poligon2()’: user.cpp:70:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &m); ^ user.cpp:73:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &x, &y); ^