Eroare de compilare: user.cpp:1:22: error: fstream.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:12: error: ‘ifstream’ was not declared in this scope user.cpp:12: error: expected ‘;’ before ‘q’ user.cpp:13: error: ‘ofstream’ was not declared in this scope user.cpp:13: error: expected ‘;’ before ‘w’ user.cpp:14: error: ‘q’ was not declared in this scope user.cpp:35: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:40: error: ‘w’ was not declared in this scope