Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp:5: error: ‘ifstream’ does not name a type user.cpp:6: error: ‘ofstream’ does not name a type user.cpp: In function ‘void citA()’: user.cpp:9: error: ‘x’ was not declared in this scope user.cpp:12: error: ‘y’ was not declared in this scope user.cpp: In function ‘void citB()’: user.cpp:20: error: ‘x’ was not declared in this scope user.cpp:23: error: ‘y’ was not declared in this scope user.cpp: In function ‘void prog()’: user.cpp:31: error: ‘y’ was not declared in this scope user.cpp: In function ‘int main()’: user.cpp:39: error: ‘y’ was not declared in this scope