Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp:3: error: ‘ifstream’ does not name a type user.cpp:4: error: ‘ofstream’ does not name a type user.cpp: In function ‘void cit()’: user.cpp:16: error: ‘fin’ was not declared in this scope user.cpp:14: warning: unused variable ‘cost’ user.cpp: In function ‘void afis()’: user.cpp:80: error: ‘fout’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:87: error: ‘fout’ was not declared in this scope user.cpp:90: error: ‘fin’ was not declared in this scope