Acorn Computers BBC Micro Model B w/8271 — Acorn BBC Micro Model B w/8271 User Guide Manual PDF

227 EXT# extent Purpose This function finds out how large a particular file is. It only works with disc and Econet filing systems – not with cassette files. The number returned is the number of bytes allocated to the file. The file to be investigated must have been opened during the OPENIN , OPENOUT or OPENUP statements. See chapter 31 for more information on file handling. 100 X=EXT#(employee) Examples PRINT EXT# (N) Description A function which returns the length in bytes of the file opened on the channel given in its argument. Syntax = EXT# ( ) Associated keywords CLOSE# , PTR# , INPUT# , PRINT# , BGET# , BPUT# , OPENIN , OPENUP , OPENOUT , EOF#