Can you explain what is meant by a complex data type in programming?

A complex data type is a type that consists of multiple values or elements combined together, unlike simple (primitive) types such as numbers, strings, or boolean values.

Examples of complex types:

• Objects — structures with a set of fields (properties) and methods.
• Arrays and lists — ordered collections of elements.
• Tuples — fixed sets of elements of different types.
• Maps, dictionaries — collections of key-value pairs.

In programming, complex types allow modeling more sophisticated data and structures, for example, describing a user with a name, age, and address.

Example in JavaScript (Node.js):

const user = {
  name: "Ivan",
  age: 30,
  interests: ["programming", "music"]
};

Here, user is an object, a complex type containing string and numeric fields, as well as an array.