Eroare de compilare: user.cpp:3:2: warning: #warning sunt putin prost user.cpp:6: error: expected initializer before ‘long’ user.cpp: In function ‘int main()’: user.cpp:15: error: ‘a’ was not declared in this scope user.cpp:16: error: ‘deq’ was not declared in this scope user.cpp:17: error: ‘deq’ was not declared in this scope user.cpp:10: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:12: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result