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Understanding Memory and Arrays in Programming
In programming, memory is essentially a long tape of bytes, with each byte
containing 8 bits
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To
understand the need for arrays, we need to examine how areas can be declared,
initialized, and represented in memory
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For example, the data type int typically takes up 4 bytes to store an integer
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In
traditional compilers, we generally take 2 or 4 bytes to be the data type for
storing numbers
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The memory manager would allocate some memory for storing a variable, and the value
stored in memory would be represented in binary
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Using Arrays
An array is a collection of more than one element of the same datatype
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The number of elements in an array is
determined by the size of the array
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In C language, for
example, we would write:
int n;
to declare an integer variable
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Initializing Arrays
Arrays can also be initialized with values
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In a one-dimensional array, the elements are stored in a single row with
multiple columns
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For
example, an array of integers would take up 2-4 bytes of memory per element
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