What is the purpose and application of different types of data in programming?

In programming, different types of data are used to store and process information in a computer's memory. They define what kind of values can be stored and what operations are permissible on them.

Main categories of data:

• Integer types (int, short, long) — for storing whole numbers.
• Floating-point types (float, double) — for numbers with decimal points.
• Boolean types (bool) — for logical values true/false.
• Character types (char) — for individual characters.
• Strings (String) — for sequences of characters.
• Composite types (arrays, structures, classes) — for grouping multiple values.

The application depends on the task: for example, integer types are used for counting elements, strings for storing text, boolean values for flags, etc. Choosing the correct data type helps to use memory efficiently and prevents errors.