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(#M40041988) DATA STRUCTURE Programming question array Keep an EYE

why index is starting with 0???

Asked In DATA STRUCTURE Nawal Kishor Sahrma (10 years ago)

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vipin patel  (10 years ago)

because of binary representation.if we start a[0] ..then for 8 number we requierd only a[0 to 7]/whoes binary representation is in 3 bit only..like 000,001,010,........111,but for 8 its 1000..it is 4 bit....and take more memory..more ram at excution time

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padmapriya  (10 years ago)

There can be many reasons stated , But one can be It depends on the compiler and Language that is used like c or c++. And also when an array is called it is created ,e g: int sample[0] is actually abbreviated as *(sample+0) and so on....... for more details please go through this article:http://www.cs.utexas.edu/users/EWD/ewd08xx/EWD831.PDF

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Madhur Narula  (9 years ago)

The first element is at the start of the array so there is no distance. Therefore the offset is 0. The reasons are not just historical: C and C++ are still around and widely used and pointer arithmetic is a very valid reason for having arrays start at index 0.

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