Eroare de compilare: user.cpp: In function ‘void RF()’: user.cpp:27: error: ‘a’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:39: error: expected ‘)’ before ‘;’ token user.cpp:39: error: expected primary-expression before ‘)’ token user.cpp:39: error: expected ‘;’ before ‘)’ token user.cpp:41: error: ‘else’ without a previous ‘if’