Compilare: user.cpp:20:2: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:7: warning: format '%ld' expects type 'long int*', but argument 2 has type 'long int' user.cpp:7: warning: format '%ld' expects type 'long int*', but argument 3 has type 'long int' user.cpp:7: warning: 'a' is used uninitialized in this function user.cpp:7: warning: 'b' is used uninitialized in this function