Eroare de compilare: user.cpp:1:21: error: fstream.h: No such file or directory user.cpp:2:22: error: iostream.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:10: error: ‘ifstream’ was not declared in this scope user.cpp:10: error: expected ‘;’ before ‘f’ user.cpp:11: error: ‘ofstream’ was not declared in this scope user.cpp:11: error: expected ‘;’ before ‘g’ user.cpp:16: error: ‘f’ was not declared in this scope user.cpp:21: warning: comparison between signed and unsigned integer expressions user.cpp:33: warning: comparison between signed and unsigned integer expressions user.cpp:54: error: ‘cout’ was not declared in this scope user.cpp:55: error: ‘cout’ was not declared in this scope user.cpp:13: warning: unused variable ‘n’ user.cpp:13: warning: unused variable ‘nr’