Structure in c

2. Structures in Cs
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3. Structures In C
• A structure is a collection of one or more
variables, possibly of different data types,
grouped together under a single name for
convenient handling.
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Structure declaration
Nested structures
Arrays of structures
Pointers to structures
Structures and functions

4. Structure declaration
• A structure type is usually defined near to the start of a file
using a typedef statement.
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typedef struct
{
char name[64];
char course[128];
int age;
int year;
} student;

5. Nested structures
• Structures can contain other structures as
members; in other words, structures can nest.
Consider the following two structure types:
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struct first_structure_type {
int integer_member;
float float_member;
};
struct second_structure_type {
double double_member;
struct first_structure_type struct_member; };

6. Arrays of structures
• Just as arrays of basic types such as integers
and floats are allowed in C, so are arrays of
structures. An array of structures is declared in
the usual way:
• struct personal_data my_struct_array[100];

7. Pointers to structures
• A pointer to a structure types
variable is declared by a
statement such as the following:
• struct personal_data *my_struct_ptr;

8. Example of structuer
•
#include<stdio.h>
struct person
{ char *name;
int age;
• };
int main()
{ struct person p;
p.name = "John Smith";
p.age = 25;
printf("%s",p.name);
printf("%d",p.age);
return 0;
• }

9. THE END

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