Compilare: user.cpp: In function 'int main()': user.cpp:30: warning: format '%ld' expects type 'long int*', but argument 3 has type 'long int' user.cpp:32: warning: format '%lld' expects type 'long long int*', but argument 3 has type 'long long int' user.cpp:32: warning: format '%lld' expects type 'long long int*', but argument 4 has type 'long long int' user.cpp:27: warning: unused variable 'j'