Compilare: user.cpp: In function ‘int main()’: user.cpp:45:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("triunghi2.in", "r", stdin); ^ user.cpp:46:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("triunghi2.out", "w", stdout); ^ user.cpp:49:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &N); ^ user.cpp:52:63: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d%d%d%d", &a.x, &a.y, &b.x, &b.y, &c.x, &c.y); ^ user.cpp:60:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d", &f.x, &f.y); ^ user.cpp:83:33: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (!inTriunghi (v[poz], a) || !inTriunghi (v[poz], b) || !inTriunghi (v[poz], c)) { ^