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Postings from January 2002
Piers Cawley wrote: >I just found a bug in the test program by inspection. See below. >> ----------------------------------------------------------- >> Hole 1 -- Get Even (even.pl) >> >> Your program reads from a single input file and writes to >> stdout; you are not permitted to write anything to stderr. > The test program does not test to see what happens when even.pl is > called with multiple files as arguments. This all depends on whether > or not 'reads from a single file' is a restriction (reads from only > the one file), or a minimum condition (reads from at least one file). > > The difference makes quite a difference in terms of program length. The programs are not required to work with multiple files. I already say: The input file may be assumed to exist. The input file may be assumed to be non-empty. I would like to further clarify: Both programs take a file name as the first argument. If called in any other way (e.g. with 0 or 2 arguments, or with stuff piped in via stdin), all bets are off: the program may work, may core dump, whatever, it does not matter. /-\ndrew.Thread Previous | Thread Next