Eroare de compilare: user.cpp:49:2: warning: no newline at end of file user.cpp:2: error: expected initializer before 'a' user.cpp: In function 'int main()': user.cpp:10: warning: format '%d' expects type 'int*', but argument 3 has type 'unsigned char*' user.cpp:10: warning: format '%d' expects type 'int*', but argument 4 has type 'unsigned char*' user.cpp:14: error: 'a' was not declared in this scope user.cpp:19: error: 'a' was not declared in this scope