How to define array in c++

An array in C is a memory block that stores consecutive elements of the same data type. The syntax for defining an array is: data type array name [array size]. Array elements are indexed starting from 0. Array features include: continuous memory storage, fixed size, and can be used as parameters or return values. Notes are to avoid indexing out of range and having to specify the array size when declaring.

Definition of array in C

Array is a contiguous memory block in C used to store elements of the same data type .

Syntax for defining arrays

<code class="cpp">数据类型 数组名[数组大小];</code>

For example, define an array containing 10 integers:

<code class="cpp">int myArray[10];</code>

Element access

Array elements can be accessed using array indexes. The index starts from 0 and represents the position of the element in the array.

<code class="cpp">myArray[0] = 10; // 访问第一个元素并赋值为 10
cout << myArray[3]; // 打印数组中第四个元素（索引为 3）</code>

Array Properties

• Array elements are stored in contiguous memory locations.
• The array size is fixed when defined and cannot be changed.
• Array is a derived data type, so it can be used as a parameter or return value of a function.

Note

• Array index out of range (less than 0 or greater than the array size minus 1) will cause the program to crash.
• The array size must be specified when declaring an array. If not specified, the compiler will report an error.
• You can use the sizeof() operator to get the size of the array (in bytes).

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