Compilare: user.cpp: In function ‘void citeste(int&)’: user.cpp:29: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result user.cpp: In function ‘int main()’: user.cpp:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:86: warning: dereferencing pointer ‘<anonymous>’ does break strict-aliasing rules /usr/include/c++/4.4/bits/stl_list.h:134: note: initialized from here