Compilare: user.cpp: In function 'int main()': user.cpp:7: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:7: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:27: warning: format '%d' expects type 'int', but argument 2 has type 'long int' user.cpp:6: warning: 'a' may be used uninitialized in this function