Structures
Structures
Structures are collections of variables grouped together under a common name. The variables within a structure are referred to as the structure’s members, and may be accessed individually as needed.

Structures:

  • May contain any number of members
  • Members may be of any data type
  • Allow group of related variables to be treated as a single unit, even if different types
  • Ease the organization of complicated data

Creating a Structure Definition

Syntax

struct structName
{
type1 memberName1;

typen memberNamen;
}

Example

Declaring a Structure Variable (Method 1)

Syntax

struct structName
{
type1 memberName1;

typen memberNamen;
} varName1 ,…, varNamen;

Example

Declaring a Structure Variable (Method 2)

Syntax

If structName has already been defined:

struct structName varName1 ,…, varNamen;

Example

Using a Structure Variable

Syntax

structVariableName.memberName

Example

Creating a Structure Type with {{typedef

Syntax

typedef struct structTagoptional
{
type1 memberName1;

typen memberNamen;
}
typeName;

Example

Declaring a Structure Type Variable

Syntax

If typeName has already been defined:

typeName varName1 ,…, varNamen;

The keyword struct is no longer required!

Example

Initializing a Structure Variable at Declaration

Syntax

If typeName or structName has already been defined:

typeName varName = {const1 ,…, constn};
or
struct structName varName = {const1 ,…, constn};

Example

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