Compilare: user.cpp: In function ‘int main()’: user.cpp:38:41: warning: format ‘%f’ expects argument of type ‘float*’, but argument 2 has type ‘double*’ [-Wformat=] scanf("%f%f",&a[i].x,&a[i].y); ^ user.cpp:38:41: warning: format ‘%f’ expects argument of type ‘float*’, but argument 3 has type ‘double*’ [-Wformat=] user.cpp:30:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.in","r",stdin); ^ user.cpp:31:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.out","w",stdout); ^ user.cpp:33:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:34:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf",&ll.x,&ll.y); ^ user.cpp:38:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%f%f",&a[i].x,&a[i].y); ^