how to declare a one based array ?

timbk

hello, is there any way to declare an indexed array in base one on VC++? thanks.

Luc Pattyn

AFAIK no. Either make the array one element bigger and ignore element zero; or subtract one from every index. :)

Luc Pattyn

I only read code that is properly indented, and rendered in a non-proportional font; hint: use PRE tags in forum messages

CPallini

timbk wrote:

hello, is there any way to declare an indexed array in base one on VC++? thanks.

You can even use ten-based array: just remember to subract 10 to the index before using it inside the [] operator... :rolleyes: [added] Hi, Mr.Univoter. Don't you like 10-based arrays, do you? :-D [/added]

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles]

modified on Wednesday, November 11, 2009 3:04 AM

timbk · modified on Wednesday, November 11, 2009 3:04 AM

thanks, how can i do to declare a ten based array?

Tim Craig

As they said, no, but you could write your own 1 based array class in C++ and overload the [] operator and whatever else is necessary to do the index adjustment for you. X|

You measure democracy by the freedom it gives its dissidents, not the freedom it gives its assimilated conformists.

CPallini

timbk wrote:

thanks, how can i do to declare a ten based array?

Do you understand irony music, Yoko? :-D

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles]

timbk

thanks, well i was trying to make the app more easy to follow, because 0 based arrays are not so intuitive, we starts count in one, i think that the easy way is make the array one element bigger but when you have many arrays is a waste of memo, so i would try with your seggest.

timbk

ohh, sorry i'm learning english and VC++, and i don't study " how to understand jokes".

Tim Craig

If you search around, you probably can find example code. I think I once saw it as an example in a C++ book.

You measure democracy by the freedom it gives its dissidents, not the freedom it gives its assimilated conformists.

CPallini

I'm sorry for you. C/C++ arrays are zero based. While there's nothing wrong in liking better one-based arrays, it is wiser remaining stuck with zero-based ones, because:

You need extra work to make your arrays alive (extra work is generally bad)
Most people use the opposite convention: that means you have to adapt your data to any time you've to deal with other people code, like libraries, etc..

Neverthless, there are few examples of consistently used one-based arrays, for instance, all "Numerical Recipes" book source code uses it (the authors simply ignore array item 0). Like all 'alien' conventions it's a bit difficult to grasp immediately, but after some experience with, becomes 'natural'. :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles]

Chris Losinger

timbk wrote:

i was trying to make the app more easy to follow, because 0 based arrays are not so intuitive

you will confuse any C/C++ programmer who has to maintain the code, if you start doing things like that.

image processing toolkits | batch image processing

Tim Craig

How is that any different than most of the code I had to maintain in my career? :laugh:

You measure democracy by the freedom it gives its dissidents, not the freedom it gives its assimilated conformists.