Compilare: user.cpp: In function ‘int main()’: user.cpp:12:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[x]++; ^ user.cpp:13:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[x]>1) ^ user.cpp:6:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dinozaur.in","r",stdin); ^ user.cpp:7:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("dinozaur.out","w",stdout); ^