Compilare: user.cpp: In constructor ‘deque::deque()’: user.cpp:18: warning: ‘deque::e’ will be initialized after user.cpp:16: warning: ‘int* deque::D’ user.cpp:20: warning: when initialized here user.cpp: In function ‘int main(int, char**)’: user.cpp:240: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:241: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:243: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:246: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:252: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result