Borderou de evaluare (job #244779)

Eroare de compilare: user.cpp:4:11: error: variable ‘std::ifstream i’ has initializer but incomplete type user.cpp:5:11: error: variable ‘std::ofstream d’ has initializer but incomplete type user.cpp: In function ‘int main()’: user.cpp:9:4: error: invalid operands of types ‘int’ and ‘const char [3]’ to binary ‘operator<<’ user.cpp:38:6: error: invalid operands of types ‘int’ and ‘const char [7]’ to binary ‘operator<<’ user.cpp:39:6: error: invalid operands of types ‘int’ and ‘const char [7]’ to binary ‘operator<<’ user.cpp:40:6: error: invalid operands of types ‘int’ and ‘const char [5]’ to binary ‘operator<<’