C programing

1. Structure in C
NUSRAT TASNIM
LECTURER, DEPARTMENT OF SOFTWARE ENGINEERING
DAFFODIL INTERNATIONAL UNIVERSITY

2. Introduction to Structure

3. General Discussion
Student1
Name1
Age1
ID Number1
CGPA1
Student3
Name3
Age3
ID Number3
CGPA3
Student2
Name2
Age2
ID Number2
CGPA2
…..

4. What is structure
A structure is a user defined data type that can be used to group items of different
data types into a single type.
Example:
struct student
{
char name[20];
int age;
int ID Number;
float CGPA;
};

5. Advantage of structure
An array can also store multiple data but only of one
data type. But using structure has the advantage of
storing multiple data of different data type.

6. Format of a structure definition
Struct tag_name
{
data_type member1;
data_type member2;
data_type member3;
……………
};
Struct student
{
char name[40];
int age;
int CGPA;
……………
};

7. Elements of structure definition
 The keyword struct
 The structure tag name
 A terminating semicolon

8. Declaring structure variable
or

9. Structure initialization
We can initialize structure in two ways-
struct student
{
char name[40];
int age;
int ID;
float CGPA;
}student={“Nusrat”,25,121,3.94};
struct student
{
char name[40];
int age;
int ID;
float CGPA;
};
Struct student s1 ={“Nusrat”,25,121,3.94};

10. Rules for initializing structure
 We can’t initialize individual members inside structure
template.
 The order of values in braces must match the order of
members in the structure definition.

11. Accessing structure members
Structure members are accessed using dot (.) operator.
Dot operator

12. Accessing Structure Elements

13. Array of Structures

14. Copying