Eroare de compilare in evaluator: user.cpp:68:2: warning: no newline at end of file user.cpp:2: error: expected nested-name-specifier before 'namespacestd' user.cpp:2: error: 'namespacestd' has not been declared user.cpp: In function 'int main()': user.cpp:5: error: 'ifstream' was not declared in this scope user.cpp:5: error: expected `;' before 'f' user.cpp:6: error: 'ofstream' was not declared in this scope user.cpp:6: error: expected `;' before 'g' user.cpp:8: error: 'f' was not declared in this scope user.cpp:65: error: 'g' was not declared in this scope user.cpp:7: warning: unused variable 'at' user.cpp:7: warning: unused variable 'bt'