What are arrays?

This is a discussion on What are arrays? within the C Programming forums, part of the General Programming Boards category; Can someone explain to me what arrays are? So I can understand them? thank you....

  1. #1
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    What are arrays?

    Can someone explain to me what arrays are? So I can understand them? thank you.

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    An array is a fixed size collection of objects (aka elements). They can be any type that C supports, such as char, int, struct, union, pointers, double, float.

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    spurious conceit MK27's Avatar
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    An array is a number of something. For example, a char array would be a number of datatype char. They are convienently numbered in order and referred to with one name. This allows you to work with strings, like "this is a string", because "this is a string" contains 15 characters.
    C programming resources:
    GNU C Function and Macro Index -- glibc reference manual
    The C Book -- nice online learner guide
    Current ISO draft standard
    CCAN -- new CPAN like open source library repository
    3 (different) GNU debugger tutorials: #1 -- #2 -- #3
    cpwiki -- our wiki on sourceforge

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    Banned master5001's Avatar
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    Quote Originally Posted by MK27 View Post
    An array is a number of something. For example, a char array would be a number of datatype char. They are convienently numbered in order and referred to with one name. This allows you to work with strings, like "this is a string", because "this is a string" contains 15 characters.
    That is a little more cryptic than a definition need be. An array is more like a super block of data that is built out of smaller units chained together.

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    and for an impromptu definition..."a logically contiguous row of memory locations used for storing data"

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    I like that definition.

    A bunch of something... int array[45] means you have a list of 45 ints. array[0] would be the first and array[n-1] would be the last. Since in this case n = 45, n-1= 44. so array[44] is the last index of the array.

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