Compilare: user.cpp: In function ‘int main()’: user.cpp:98:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("elicoptere.in", "r", stdin); ^ user.cpp:99:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("elicoptere.out", "w", stdout); ^ user.cpp:100:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &cer, &ntr, &dmax); ^ user.cpp: In member function ‘void Triunghi::init()’: user.cpp:56:97: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf %lf %lf %lf %lf %lf\n", &p[0].x, &p[0].y, &p[1].x, &p[1].y, &p[2].x, &p[2].y); ^