Compilare: user.cpp:103:30: warning: ISO C++ forbids converting a string constant to ‘char*’ [-Wwrite-strings] ofbuffer fout("densitate.out"); ^ user.cpp: In member function ‘void InputReader::adv()’: user.cpp:26:54: 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); ^