Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp:2:20: error: iomanip.h: No such file or directory user.cpp:3: error: ‘::main’ must return ‘int’ user.cpp: In function ‘int main()’: user.cpp:5: error: ‘fstream’ was not declared in this scope user.cpp:5: error: expected ‘;’ before ‘f’ user.cpp:6: error: expected ‘;’ before ‘g’ user.cpp:7: error: ‘f’ was not declared in this scope user.cpp:23: error: ‘g’ was not declared in this scope