Compilare: user.cpp: In function 'int main()': user.cpp:9: warning: format '%lf' expects type 'double*', but argument 2 has type 'long double*' user.cpp:9: warning: format '%lf' expects type 'double*', but argument 3 has type 'long double*' user.cpp:16: warning: use of 'll' length modifier with 'f' type character