Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp:4: error: ‘ifstream’ does not name a type user.cpp:5: error: ‘ofstream’ does not name a type user.cpp: In function ‘void citeste()’: user.cpp:7: error: ‘fin’ was not declared in this scope user.cpp: In function ‘void scrie_sol()’: user.cpp:13: error: ‘fout’ was not declared in this scope user.cpp:14: error: ‘fout’ was not declared in this scope user.cpp: In function ‘void back()’: user.cpp:30: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp: In function ‘int main()’: user.cpp:44: error: ‘fin’ was not declared in this scope user.cpp:45: error: ‘fout’ was not declared in this scope