submdisj.cpp: In function 'int main()': submdisj.cpp:9: error: variable 'std::ifstream f' has initializer but incomplete type submdisj.cpp:10: error: variable 'std::ofstream g' has initializer but incomplete type submdisj.cpp:12: error: expected ';' before 'for' submdisj.cpp:12: warning: statement has no effect submdisj.cpp:12: error: expected ';' before ')' token submdisj.cpp:13: warning: statement has no effect submdisj.cpp:13: error: expected ';' before ')' token submdisj.cpp:7: warning: unused variable 'k'