FAT file system-Given any valid cluster number N, where in the FAT(s) is the entry for that cluster number?

For FAT16 and FAT32： If(BPB_FATSz16 != 0)      FATSz = BPB_FATSz16;  Else     FATSz = BPB_FATSz32;  If(FATType == FAT16)     FATOffset = N * 2; Else if (FATType == FAT32)     FATOffset = N * 4; ThisFATSecNum = BPB_ResvdSecCnt + (FATOffset / BPB_BytsPerSec); ThisFATEntOffset = REM(FATOffset / BPB_BytsPerSec); /* remainder after division of FATOffset by BPB_BytsPerSec (余数)*/