Compilare: user.cpp: In function 'int main()': user.cpp:79: warning: format '%ld' expects type 'long int*', but argument 3 has type 'int*' user.cpp:79: warning: format '%ld' expects type 'long int*', but argument 4 has type 'int*' user.cpp:12: warning: 'v' may be used uninitialized in this function