What Is a Structure Data Type?


Heather Bennett

A structure data type is a composite data type that allows you to store multiple pieces of related information together. It is an essential concept in programming and plays a crucial role in organizing and managing complex data.

What are Structure Data Types?

In programming, structure data types are used to create custom data types that can contain different types of variables. It allows you to group related variables together, making it easier to work with and manipulate data.

Structure data types are especially useful when you need to store and organize multiple pieces of information that are logically connected. For example, if you want to store information about a person, you can create a structure with variables such as name, age, and address.

Defining Structure Data Types

In most programming languages, structure data types are defined using the struct keyword. The struct keyword is followed by the name of the structure and a list of variables inside curly braces.

struct Person {
    string name;
    int age;
    string address;

In this example, we define a structure called Person that contains three variables: name (of type string), age (of type int), and address (of type string).

Accessing Structure Members

To access the members of a structure, you use the dot (.) operator. For example, if we have a variable called “person1” of type Person, we can access its members as follows:

// Create an instance of Person
Person person1;

// Assign values to its members
person1.name = "John Doe";
person1.age = 25;
person1.address = "123 Main St";

// Access and display the values
cout << "Name: " << person1.name << endl;
cout << "Age: " << person1.age << endl;
cout << "Address: " << person1.address << endl;

The output will be:

  • Name: John Doe
  • Age: 25
  • Address: 123 Main St

Nesting Structures

In addition to storing simple variables, structures can also contain other structures. This allows you to create complex data structures that can represent real-world entities more accurately.

// Define a structure for storing coordinates
struct Point {
    int x;

// Define a structure for storing a rectangle
struct Rectangle {
    Point topLeft;
    Point bottomRight;

In this example, we define two structures: Point and Rectangle. The Rectangle structure contains two members of type Point, representing the top-left and bottom-right coordinates of the rectangle.

The Benefits of Using Structure Data Types

The use of structure data types offers several benefits:

  • Organization and readability:
  • Structures allow you to group related variables together, making your code more organized and easier to read.

  • Modularity:
  • Structures can be defined once and reused in multiple parts of your program, promoting modularity and code reusability.

  • Complex data representation:
  • By nesting structures and defining complex relationships between variables, you can accurately represent complex real-world entities.


Structure data types are a powerful tool in programming for organizing, managing, and manipulating complex data. They allow you to group related variables together, making your code more structured and readable. By using the appropriate HTML styling elements like bold, underline,

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    So, next time you encounter a situation where you need to store multiple pieces of information together, consider using structure data types to simplify your code and improve its readability.