Compilare: user.cpp: In function 'int main()': user.cpp:10: warning: format '%lld' expects type 'long long int*', but argument 2 has type 'int*' user.cpp:12: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:8: warning: 'k' may be used uninitialized in this function