Understanding Arrays in C++: How to Declare, Initialize, and Access Elements

array

An arrangement of objects in equal rows

An array is a collection of elements (items) of the same type stored in contiguous memory locations that can be accessed by an index or a subscript. In other words, an array is a data structure that stores a fixed-size sequenced collection of elements of the same type.

For example, an array of integers in C++ can be declared as:

“`c++
int numbers[5];
“`

This creates an array of 5 integers named `numbers`, which can be accessed using the index notation like this:

“`c++
numbers[0] = 1;
numbers[1] = 2;
numbers[2] = 3;
numbers[3] = 4;
numbers[4] = 5;
“`

This way, we can initialize or access a specific element of the array by using its index number.

Arrays are commonly used to store and manipulate large amounts of data, such as matrices, lists of numbers, and text strings. They are also used to implement other data structures, such as stacks, queues, and hash tables.

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