Lecture 76:- Declarations of Array

The declaration of an array involves specifying its type and size. The syntax for declaring an array may vary depending on the programming language you are using. Here are some examples of array declarations in different programming languages:

1. C/C++:

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// Declare an array of integers with a size of 5 int intArray[5]; // Declare an array of characters with an explicit size of 10 char charArray[10];

1. Java:

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// Declare an array of integers with a size of 5 int[] intArray = new int[5]; // Declare an array of strings with an explicit size of 3 String[] stringArray = new String[3];

1. Python:

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# Declare an array of integers int_array = [0, 0, 0, 0, 0] # Declare an array of strings string_array = ["apple", "banana", "cherry"]

1. JavaScript:

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// Declare an array of integers let intArray = [1, 2, 3, 4, 5]; // Declare an array of strings let stringArray = ["apple", "banana", "cherry"];

In the above examples:

• The array name (e.g., intArray, charArray) represents the variable that refers to the array.
• The square brackets ([]) are used to specify the size of the array (i.e., the number of elements it can hold).
• In some languages like Java and C#, the new keyword is used to dynamically allocate memory for the array.
• The elements of the array can be initialized with default values or specific values, depending on the language and the declaration.

It's worth noting that in some programming languages, such as Python and JavaScript, arrays are dynamically-sized and can hold elements of different types. In contrast, in languages like C, C++, and Java, arrays have a fixed size and can only hold elements of the same type.