Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:20: error: ‘cout’ is not a member of ‘std’ user.cpp:20: error: ‘test’ was not declared in this scope user.cpp:20: error: ‘t’ was not declared in this scope user.cpp:13: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result