Compilare: user.cpp: In function 'int main()': user.cpp:9: warning: format '%ld' expects type 'long int*', but argument 2 has type 'int*' user.cpp:12: warning: format '%ld' expects type 'long int*', but argument 2 has type 'int' user.cpp:21: warning: format '%ld' expects type 'long int', but argument 2 has type 'int'