3 Questions about ANSI-C

SpLaSh212 · 01-03-2009, 06:51 AM

Hey guys,
I have a few questions regarding ANSI-C
1. Can I change the indexes of an array to start from a different number (lets say from 1 and not from 0) so that

Code:

int arr[4]

will give me an array from arr[1] to arr[4] ?

2. Am I limited when I use "bit fields" to 8 bits max ?

3. Does the function fsize always prints file size ?

I'm suppose to write if its true/false or sometimes true and to explain why ...

Thnx alot!

swodniw · 01-03-2009, 07:00 AM

Quote:

I'm suppose to write if its true/false or sometimes true and to explain why ...

Please do not post your homework questions it is against the forum rules.
Thread reported for closure.

SpLaSh212 · 01-03-2009, 09:34 AM

Ok, i'm sorry if its seems like copy & paste for me ...
but still, I would like that someone can lead me to the answer , help me with the search criteria ..

johnsfine · 01-03-2009, 09:49 AM

Quote:

Originally Posted by SpLaSh212

I have a few questions regarding ANSI-C

The fact that those are harder to answer with a simple web search than typical homework questions may indicate your instructor has gone to some effort to select questions that test whether you have been paying attention in class.

I have not been paying attention in your class.

Quote:

1. Can I change the indexes of an array to start from a different number (lets say from 1 and not from 0)

I expect you have some documentation (text book, language reference manual, etc.) telling everything you're supposed to have learned about arrays. Reread that. See what you find.

Quote:

2. Am I limited when I use "bit fields" to 8 bits max ?

Same answer, but for "bit fields". Though that one may be easier to answer with google.

Quote:

3. Does the function fsize always prints file size ?

Which "function fsize"?

Maybe my question is your answer. But maybe my question was answered in class and is just the starting point for your answer. Again, I wasn't paying attention in your class.

wje_lq · 01-03-2009, 09:54 AM

Quote:

I would like that someone can lead me to the answer , help me with the search criteria

Fair enough.

Quote:

1. Can I change the indexes of an array to start from a different number (lets say from 1 and not from 0) so that

Code:

int arr[4]

will give me an array from arr[1] to arr[4] ?

Any book or complete C tutorial will describe the conditions under which this can be done, if any. My favorite tutorial is here. If you use that, you may wish to start with the introductory class notes, and focus on Chapter 4.

Quote:

2. Am I limited when I use "bit fields" to 8 bits max ?

Try it out and see. Make one that's 9 bits long, cycle through all 512 values, and see whether they stick.

Quote:

3. Does the function fsize always prints file size ?

I guarantee you'll quickly find the answer to this one if you experiment with a fairly standard ANSI C compiler (gcc will do).

Hope this helps.

SpLaSh212 · 01-03-2009, 10:14 AM

OK guys, thnx for the replies ...
I already found the answers to Q 2 & 3 ....
I wasn't that hard, I just want to do it simultaneity (google & here)

Regarding to Q 1, i'll check the posted link here,
I'm using Dennis Richie's ANSI C book, I'll re check there, bc I couldn't find anything about it the first time I was looking.

So again, thnx for the replies guys !

wje_lq · 01-03-2009, 10:28 AM

Quote:

I just want to do it simultaneity (google & here)

That's just rude.