Eroare de compilare in evaluator: user.cpp: In function 'int main()': user.cpp:11: error: 'pi' was not declared in this scope user.cpp:17: error: 'a' was not declared in this scope user.cpp:17: error: 'b' was not declared in this scope user.cpp:17: error: 'c' was not declared in this scope user.cpp:17: error: 'cont' was not declared in this scope user.cpp:19: error: 'sub' was not declared in this scope user.cpp:29: error: 'sub' was not declared in this scope user.cpp:31: error: 'sub' was not declared in this scope user.cpp:38: error: a function-definition is not allowed here before '{' token user.cpp:49: error: expected `}' at end of input