Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:5: error: expected initializer before ‘ifstream’ user.cpp:7: error: ‘f’ was not declared in this scope user.cpp:8: error: ‘b’ was not declared in this scope user.cpp:14: warning: suggest parentheses around assignment used as truth value user.cpp:14: error: expected primary-expression before ‘;’ token