Structure(Inroduction)

Structure

Introduction

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 convincible 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 >