submdisj.cpp: In function 'int main()': submdisj.cpp:8: error: 'ifstream' was not declared in this scope submdisj.cpp:8: error: expected ';' before 'fin' submdisj.cpp:9: error: 'ofstream' was not declared in this scope submdisj.cpp:9: error: expected ';' before 'fout' submdisj.cpp:15: error: 'fin' was not declared in this scope submdisj.cpp:26: error: 'fout' was not declared in this scope submdisj.cpp:27: error: 'fout' was not declared in this scope submdisj.cpp:29: error: 'fout' was not declared in this scope