Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:15:5: error: ‘fstream’ is not a member of ‘std’ std::fstream in,out; ^ user.cpp:15:18: error: expected ‘;’ before ‘in’ std::fstream in,out; ^ user.cpp:16:5: error: ‘in’ was not declared in this scope in.open("rucsac.in", std::ios::in); ^ user.cpp:16:31: error: ‘std::ios’ has not been declared in.open("rucsac.in", std::ios::in); ^ user.cpp:17:5: error: ‘out’ was not declared in this scope out.open("rucsac.out", std::ios::out); ^ user.cpp:17:33: error: ‘std::ios’ has not been declared out.open("rucsac.out", std::ios::out); ^