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What is Structure?

The C language allows us to create custom data types.

The structure is a custom data type which c combines different data types .

The structure is a custom data type which combine different data types to form a new user define data type.

Definition

A structure is a collection of variable reference under one name providing a con vincible means of related information together.

Format: struct tag_name
{
data _type member1;
data_type member2;
——————-
———————
};

here a keyboard struct declares a structes to hold the details of field of different data types.

Example:
struct addr
{
char name [30];
char city [15];
int pincode ;
};

Creating Structure variable

structure can be created in two ways:

1. declaration using tagname anywhere in the program.

Example:

struct book
{
char name [30];
char author [25];
float price;
};
struct book book1 book2

2. it is also allowed to combine structure declaration and variable declaration in one statement.

Example:

struct person
{
char *name;
int age;
char*address;
};
p1,p2,p3

while declaring structure variable along with their definition, the use of tag-name is optional.

Struct
{
char *name;
int age;
char * address;
}
p1,p2,p3

Image showing how the given value allocate in structure with the help of an example >

 

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