Borderou de evaluare (job #543199)

Eroare de compilare: user.cpp:2:1: error: ‘ifstream’ does not name a type user.cpp:3:1: error: ‘ofstream’ does not name a type user.cpp:5:1: error: ‘queue’ does not name a type user.cpp: In function ‘int main()’: user.cpp:10:5: error: ‘cin’ was not declared in this scope user.cpp:10:5: note: suggested alternative: /usr/include/c++/4.6/iostream:61:18: note: ‘std::cin’ user.cpp:17:13: error: ‘a’ was not declared in this scope user.cpp:20:5: error: ‘cout’ was not declared in this scope user.cpp:20:5: note: suggested alternative: /usr/include/c++/4.6/iostream:62:18: note: ‘std::cout’ user.cpp:23:12: error: ‘a’ was not declared in this scope