Compilare: user.cpp: In member function ‘char InputReader::get_char()’: user.cpp:18:5: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp:15:50: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, sizeof(char), BUFF_SIZE, fin); ^