Eroare de compilare: user.cpp:1:20: error: fstream.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:6: error: ‘stdin’ was not declared in this scope user.cpp:6: error: ‘freopen’ was not declared in this scope user.cpp:7: error: ‘stdout’ was not declared in this scope user.cpp:8: error: ‘scanf’ was not declared in this scope user.cpp:9: error: ‘strlen’ was not declared in this scope user.cpp:27: error: ‘printf’ was not declared in this scope user.cpp:29: error: ‘printf’ was not declared in this scope