Compilare: user.cpp: In function ‘int main()’: user.cpp:11:25: warning: format ‘%lld’ expects argument of type ‘long long int*’, but argument 3 has type ‘int*’ [-Wformat=] fscanf(f, "%lld", &n); ^ user.cpp:11:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lld", &n); ^