Compilare: user.cpp: In function ‘int main()’: user.cpp:55:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] Bad[str[x]] = 1; ^ user.cpp:57:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(!Bad[str[i]]) break; ^ user.cpp:26:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pmk.in", "r", stdin); ^ user.cpp:27:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pmk.out", "w", stdout); ^