Compilare: user.cpp:26: warning: non-local variable ‘<anonymous struct> queue [1003002]’ uses anonymous type user.cpp:26: warning: non-local variable ‘<anonymous struct>* pop’ uses anonymous type user.cpp:26: warning: non-local variable ‘<anonymous struct>* push’ uses anonymous type user.cpp: In function ‘void read()’: user.cpp:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘void print()’: user.cpp:47: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result