Compilare: user.cpp: In member function ‘void InputReader::GetBuffer()’: user.cpp:24:61: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] cursor = 0; fread(buffer, 1, kBufferSize, stdin); ^ user.cpp: In constructor ‘InputReader::InputReader()’: user.cpp:21:61: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] cursor = 0; fread(buffer, 1, kBufferSize, stdin); ^