Compilare: user.cpp: In function ‘int main()’: user.cpp:40:25: warning: format ‘%f’ expects argument of type ‘float*’, but argument 2 has type ‘double*’ [-Wformat=] scanf("%f",&v[i]); ^ user.cpp:34:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv4.in","r",stdin); ^ user.cpp:35:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv4.out","w",stdout); ^ user.cpp:40:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%f",&v[i]); ^