Structures Pointers
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  • What you'll learn
    • ✓What is structure in C++ with an example?
    ✓What is the syntax of structure to pointer?
    ✓How many types of structures are there in C++?
    ✓What is pointer data structure?
    ✓How to declare structure?
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  • A structure is a collection of variables of different data types and member functions under a single name. It is similar to a class as both hold a collection of data of different data types. Suppose you want to store some information about a person: their first_name , last_name , age , and salary .
  • To declare a structure pointer, use the following syntax: struct myStruct *ptr; Here, struct denotes the structure type, myStruct is the structure name, and *ptr declares the structure pointer variable.
  • A pointer is a type of variable that holds the memory address of another variable. When you create a pointer, you must specify the type of data that it will point to. This could be a primitive data type, such as an integer or a character, or a complex data type, such as an array or a structure.
  • A structure is something of many parts that is put together. A structure can be a skyscraper, an outhouse, your body, or a sentence. Structure is from the Latin word structura which means "a fitting together, building." Although it's certainly used to describe buildings, it can do more than that.
  • You begin a structure declaration with the Structure Statement, and you end it with the End Structure statement. Between these two statements you must declare at least one element. The elements can be of any data type, but at least one must be either a nonshared variable or a nonshared, noncustom event.
  • A pointer is the address of that structure (or anything else) in memory. The structure is a “blueprint” of how to store the data in memory, the pointer is the location of the data in memory. The idea of a pointer is that rather than pass the data around your program, you pass the location of the data.
  • Structures (also called structs) are a way to group several related variables into one place. Each variable in the structure is known as a member of the structure. Unlike an array, a structure can contain many different data types (int, float, char, etc.).
  • A structure pointer is defined as the pointer which points to the address of the memory block that stores a structure known as the structure pointer. Complex data structures like Linked lists, trees, graphs, etc. are created with the help of structure pointers.
  • An array of structures is simply an array in which each element is a structure of the same type. The referencing and subscripting of these arrays (also called structure arrays) follow the same rules as simple arrays.
  • A nested structure in C is a structure that contains one or more members that are themselves structures. Nested structures are useful for organizing complex data and can help improve a program's readability and maintainability.

Requirement

Pointer to structure in C++ can also be referred to as Structure Pointer. A structure Pointer in C++ is defined as the pointer which points to the address of the memory block that stores a structure.

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