Hi

Someone out there must have come across this before.

I need to subtract one time from another, to work out an elspased time.

The times are stored in the format hh:mm:ss.dd so are always the same length (time of day stored to 2 decimal places)

Anyone got some code which can do this?

I'll need to have the result stored in (a) the same format (i.e. to 2 decimal places) and also (b) as a number of seconds rounded up to the next full second (anything after the deimal point rounds up, not just to the nearest second), but I can probably figure that out once I've got the subtraction worked out.

It will save me having to write some convoluted code (as I'm not exactly smart with this stuff)

Many thanks for your time.

John

Hi.

I started my programming life on a Sinclair ZX81 many years ago, and learnt the basics by laboriously typing up long program listings from magazines, finding things that worked for me and then getting some books and progress through a Spectrum, then Basic on an Amstrad PCW and finally through to pcs via QuickBasic 4.5 and now QB64, modifying my program requirements to suit my needs over the years.

In the early days, it was all game-based, but now more utilitarian.

My philosophy has always been to try to get a core set of subroutines which do specific jobs and then build around those. I suppose I'm fortunate that I have a specific requirement in my world, so I can devote time to that (timing running races and writing software to handle the data and timings) and that's what I've been developing since I started out in 1987.

As a result I only ever need a fairly minimal understanding, which is good for me as QB64 has developed into a mindblowing array (excuse the pun) of keywords, most of which I don't understand or will probably never use.

I know that I have not developed the best programming practices over the years and have probably got sloppy code and bad habits, but what I have does the job I need, so that's always been my work method - have a specific goal, understand what I need to do and work out how to do it (then tidy it up!).

Porting my program from QB4/5 to QB64 took a day or two - the hardest part was getting my head round how the printing side of things now doesn't work with the methods I've used for 20 years!

There are many people on this forum who will be happy to help you out if you get stuck, but the knowledge base here and any books you can get your hands on (even if not specific to this version of Basic) will be helpful to you as a lot of things can be transferred from one variety to another with only relatively small changes.

It tends to be the graphical side of things which is more complex (in my view) so my programs tend to be keypress-based rather than mouse orientated.

Best of luck - you'll have hours of fun and frustration, in equal measure!!

John

Hi

Thanks - works fine as long I use the && long integers to get all the decimal digits I need. :-)

I'm not a religious man, but hands down, this 940 page "Bible" is hard to beat:
https://www.amazon.com/gp/product/1556152620

Hi

I have a slightly earlier Microsoft book - "Microsoft QuickBasic Compiler for DOS Systems 4.5" (1988 reprinted in 1991) which also came with 2 3.5" floppy disks!!

That one stays under the shelves as I find the Que book easier to work with - just used to come out when I needed some reference material.

Also found in my "pile under the shelves" is "QBasic - the language of MS-DOS" by Mike James (1992) I/O Press.

Anyone want this?

Not a big book (<250 pages) so shouldn't cost too much for postage in the UK. Not sure about sending overseas though.