Compilare: user.cpp: In function ‘void read()’: user.cpp:16:42: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘double*’ [-Wformat=] scanf("%d %d",&vec[i].x,&vec[i].y); ^ user.cpp:16:42: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘double*’ [-Wformat=] user.cpp:12:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aria.in","r",stdin); ^ user.cpp:13:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("aria.out","w",stdout); ^ user.cpp:14:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:16:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&vec[i].x,&vec[i].y); ^