Compilare: main.cpp: In member function 'void InputReader::advance()': main.cpp:12:40: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] ptx = 0; fread(buf, SIZE, 1, inFile); } } ^ main.cpp: In constructor 'InputReader::InputReader(const char*)': main.cpp:19:30: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buf, SIZE, 1, inFile); } ^