Eroare de compilare: user.cpp:1:21: error: fstream.h: No such file or directory user.cpp:2:21: error: iomanip.h: No such file or directory user.cpp: In function ‘void citire()’: user.cpp:21: error: ‘ifstream’ was not declared in this scope user.cpp:21: error: expected ‘;’ before ‘fin’ user.cpp:22: error: ‘fin’ was not declared in this scope user.cpp: In function ‘void afisare()’: user.cpp:27: error: ‘ofstream’ was not declared in this scope user.cpp:27: error: expected ‘;’ before ‘fout’ user.cpp:28: error: ‘fout’ was not declared in this scope user.cpp:28: error: ‘setprecision’ was not declared in this scope user.cpp:28: error: ‘endl’ was not declared in this scope