Borderou de evaluare (job #227850)

Eroare de compilare: user.cpp:5:11: error: ‘::main’ must return ‘int’ user.cpp: In function ‘int main()’: user.cpp:7:3: error: ‘ifstream’ was not declared in this scope user.cpp:7:3: note: suggested alternative: /usr/include/c++/4.6/iosfwd:159:34: note: ‘std::ifstream’ user.cpp:7:12: error: expected ‘;’ before ‘f’ user.cpp:8:3: error: ‘f’ was not declared in this scope user.cpp:30:3: error: ‘ofstream’ was not declared in this scope user.cpp:30:3: note: suggested alternative: /usr/include/c++/4.6/iosfwd:162:34: note: ‘std::ofstream’ user.cpp:30:12: error: expected ‘;’ before ‘g’ user.cpp:31:3: error: ‘g’ was not declared in this scope