Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:5: error: ‘ifstream’ was not declared in this scope user.cpp:5: error: expected ‘;’ before ‘f’ user.cpp:6: error: ‘ofstream’ was not declared in this scope user.cpp:6: error: expected ‘;’ before ‘g’ user.cpp:7: warning: statement has no effect user.cpp:8: warning: statement has no effect user.cpp:9: warning: statement has no effect user.cpp:16: warning: statement has no effect user.cpp:17: warning: statement has no effect user.cpp:24: error: invalid operands of types ‘int’ and ‘const char [13]’ to binary ‘operator<<’