Eroare de 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 'int*' user.cpp:8: warning: format '%ld' expects type 'long int*', but argument 2 has type 'int*' user.cpp:16: error: 'a' was not declared in this scope user.cpp:16: warning: format '%ld' expects type 'long int', but argument 2 has type 'int' user.cpp:16: warning: too few arguments for format