Eroare de compilare: 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 citire()’: user.cpp:9: error: ‘in’ was not declared in this scope user.cpp:13: error: ‘C’ was not declared in this scope user.cpp:15: error: a function-definition is not allowed here before ‘{’ token user.cpp:53: error: expected ‘}’ at end of input user.cpp:53: error: expected ‘}’ at end of input