Thread: Array Doubt

Q. How many values can be stored by an array A(-1...m,1...m)?

a. m
b. m²
c. m(m+ 1)
d. m(m+2)

I am not getting any clue what's the output, can anyone help me out with correct option and explanation

thanks a lot in advance

Originally Posted by laserlight

Consider a few values of m, list out the elements, and count. You should be able to spot some kind of pattern.

Thanks for the reply , let me try this will get back

Originally Posted by laserlight

Consider a few values of m, list out the elements, and count. You should be able to spot some kind of pattern.

but I am not getting how to declare array for example it is declared generally as A[1][2] if 2 dimensional and A[2] if one dimensional , here how to declare it, how to place value of m can u give one example

Originally Posted by shyjuu

but I am not getting how to declare array

The array is two dimension, but it's not like C since the first and last indexes are being specified. Assuming that the notation is "inclusive", then the first dimension's indexes go from -1 to m, and the second dimension's indexes go from 1 to m.

Originally Posted by rcgldr

The array is two dimension, but it's not like C since the first and last indexes are being specified. Assuming that the notation is "inclusive", then the first dimension's indexes go from -1 to m, and the second dimension's indexes go from 1 to m.

If its not of C then its of which programming language, and what's the answer

You should know which programming language the question is about. From where did you copied it?

I would say it's pseudocode and thus a general question.

Do the calculation yourself then come back, tell us what you think the answer is and why.

Bye, Andreas

I am solving some question on the net I found that there, but I am unable to solve it , I just want example of the declaration, so I can think further

Originally Posted by shyjuu

I am solving some question on the net I found that there, but I am unable to solve it , I just want example of the declaration, so I can think further

C doesn't support negative indices in arrays. You can answer the question and make the program, by using an offset of -1, in the first range of indices, however.

But you can't make array declarations in C, that strictly match up with the index numbers you have given in your first post.

As AndiPersti replied above, it has to be pseudo code if the language is C. If it's for another language, I'd guess it's Pascal(Delphi), since that language was created to help teach programming, and it uses array syntax like that.

Originally Posted by Adak

C doesn't support negative indices in arrays. You can answer the question and make the program, by using an offset of -1, in the first range of indices, however.

But you can't make array declarations in C, that strictly match up with the index numbers you have given in your first post.

As AndiPersti replied above, it has to be pseudo code if the language is C. If it's for another language, I'd guess it's Pascal(Delphi), since that language was created to help teach programming, and it uses array syntax like that.

As per as I remember it was C language question, so what should me the solution

Originally Posted by shyjuu

As per as I remember it was C language question, so what should me the solution

Read post #5 again. That's the answer.

Originally Posted by Adak

Read post #5 again. That's the answer.

According to that Post, suppose m=2

A(-1..2 , 1..2 )

I am still confused about the declaration , how to run this and know the output

Originally Posted by shyjuu

According to that Post, suppose m=2

A(-1..2 , 1..2 )

I am still confused about the declaration , how to run this and know the output

There are hundreds of C examples of array declarations on this web site. If you are still confused, click on the "C Tutorial" button, near the top (center) of this page, and go through some of it.

One of the beautiful things about programming is, you can try out different syntax's and blocks of code, in very little time.

I am not going to spoon feed you on this. You've already been told the answer, and more. Either you want to work on it, or you don't. Choice is yours.

Originally Posted by shyjuu

According to that Post, suppose m=2

A(-1..2 , 1..2 )

I am still confused about the declaration , how to run this and know the output

I surely want to work out by my own so I am putting so much efforts on clearing my doubts