The document explains the concept of structures in programming as a method for grouping related data items of different types, which cannot be achieved using arrays. It provides details on how to declare a structure using the 'struct' keyword, along with examples, such as defining a library book structure and a student structure. Additionally, it highlights the practical applications of structures in managing grouped data, particularly in database contexts.

1. INTRODUCTION OF STRUCTURE

2. Structure is a method of packing data of different
types. A structure is a convenient method of handling
a group of related data items of different data types.
If we need to use a collection of different data type
items it is not possible using an array, so we can
use a structure.

3. To declare a structure, we use the keyword struct. The collection of
data items that need to be a part of the structure are then declared
within the braces.
Struct structure_name
{
data type member1;
data type member2;
……;
……;
};
r example:
Struct lib_books
{
char title[20];
char author[15];
int pages;
float price;
};

4. Struct lib_books
{
char title[20];
char author[15];
int pages;
float price;
};
struct lib_books book1,book2,book3;
2:
Struct lib_books
{
char title[20];
char author[15];
int pages;
float price;
}book1,book2,book3;

5. 1. struct lib_books book1={“ C++ ”,400,250.00};
2. book1.pages=400;
3. book1.price=250.00;
4. scanf(“%s”,book1.name);
5. scanf(“%d”,&book1.pages);

6. 1:
#include<stdio.h>
#include<conio.h>
struct student
{
char name[20];
int roll;
char branch[10];
}s;
printf(“n enter name”);
scanf(“%s”,s.name);
s.roll=16;
s.branch=“cs”;
printf(“name=%s roll no.=%d
branch=%s”,s.name,s.roll,s.branch);
getch();
}

7. struct student
{
char name[20];
float marks;
};
void main()
{
struct student s1={“juhi”,90};
struct student s2;
s2=s1;
printf(“n name= %s n marks=%f”,s1.name,s1.marks);
printf(“n name= %s n marks=%f”,s2.name,s2.marks);
getch();
}

8.  Structures hold data that belong together.
 Examples:
 Student record: student id, name, major,
gender, start year, …
 Bank account: account number, name,
currency, balance, …
 Address book: name, address, telephone
number, …
 In database applications, structures are called
records.

9. ~THANK YOU~
RISE FOR QUESTIONS PLEASE!!