Compilare: user.cpp: In function ‘int main()’: user.cpp:147:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("adapost.in", "r", stdin); ^ user.cpp:148:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("adapost.out", "w", stdout); ^ user.cpp:150:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^ user.cpp:152:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%lf%lf", &S [i].x, &S [i].y); ^ user.cpp:154:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%lf%lf", &D [i].x, &D [i].y); ^ user.cpp:176:13: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] k = 1.0 * last / 10000; ^ user.cpp:169:17: warning: ‘dmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] m = (st + dr) / 2; ^