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Declaring Structure Variable in C

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Syntax :

struct tag
{
member1;
member2;
member3;
};

Yet another Syntax :

struct <structure_name>
{
structure Element1;
structure Element2;
structure Element3;
...
...
};

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Note

1. Struct keyword is used to declare structure.
2. Members of structure are enclosed within opening and closing braces.
3. Declaration of Structure reserves no space.
4. It is nothing but the " Template / Map / Shape " of the  structure .
5. Memory is created , very first time when the variable is created / Instance is created.

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Ways of Declaring Structure Variable / Structure Instance :

Way 1 : Immediately after Structure Template

struct date
{
int date;
char month[20];
int year;
}today;  // 'today' is name of Structure variable

Way 2 : Declare Variables using struct Keyword

struct date
{
int date;
char month[20];
int year;
};
struct date today;   
/*-----------------------------------
  date   :  Name of Structure
  today  :  Structure Variable 
  ---------------------------------- */

Way 3 : Declaring Multiple Structure Variables

struct Book{
int pages;
char name[20];
int year;
}c,cpp,java;  // Multiple Structure Variables

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Tags / Keywords : | declaring Structure, Initialization of Structure, structure

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