Eroare de compilare in evaluator: user.cpp:16:12: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:8: error: expected initializer before '>>' token user.cpp:9: error: 'c' was not declared in this scope user.cpp:10: error: 'i' was not declared in this scope user.cpp:10: error: no match for 'operator<<' in 'f1 << k' user.cpp:10: error: 'v' was not declared in this scope user.cpp:12: error: 'j' was not declared in this scope user.cpp:13: error: 'l' was not declared in this scope user.cpp:14: error: 'v' was not declared in this scope