Scalar variables: These are the simplest type of variables and can hold a single value, such as a number or a string. Scalar variables are represented by a dollar sign ($). Examples: $name, $age, $price etc.
Array variables: These are used to store a list of values. Arrays are ordered lists, meaning that the values are stored in a specific order. The values in an array can be any type, including other arrays or hashes. Arrays are represented by the @ symbol. Examples: @fruits, @numbers, @friends etc
Hash variables: These are similar to arrays, but instead of a numerical index, they use a string (or "key") as an index. Hashes are useful when you need to store a collection of related data, such as a list of name-value pairs. Hashes are represented by the % symbol. Examples: %employee, %student, %config etc.
Scalars are the most basic type of variables, arrays are used to store a list of values and hashes are used to store a collection of key-value pairs. Scalars can be used to store a single value, arrays can be used to store a list of values and hashes can be used to store a collection of key-value pairs.
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