Eroare de compilare: user.cpp:6:11: error: variable ‘std::ifstream f’ has initializer but incomplete type ifstream f("text.in"); ^ user.cpp:7:11: error: variable ‘std::ofstream g’ has initializer but incomplete type ofstream g("text.out"); ^ user.cpp: In function ‘int main()’: user.cpp:16:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(p);i++) ^