C –Structure

C structure is a collection of different types of data that is grouped together. It is used to represent records.Structkeyword is used to create a structure. Each element of a structure is called a member. Syntax:

structstructure name{

data_type member1;

data_type member2;

data_type member3;

-------------------------

-------------------------

data_type member;

Example1:

struct student{
int id;
char name[30];
char class[30];
int mob;
}

Note: The given above example in which id, name, class, mob are the members of the structure, struct is a keyword and student is structure tag.

Example 2:

#include<stdio.h>
struct abc{ // create structure using 'struct' keywrod
int x, y;
};
int main(){
struct abc p1 = {0, 1};
p1.x = 25;
printf("Example of Structure");
printf ("x = %d \n y = %d", p1.x, p1.y);
return 0;
}

Output

Example of Structurex = 25 
 y = 1

Array of structure: Example

#include<stdio.h>
struct abc{ // create structure using 'struct' keywrod
int x, y,z;
};
int main(){
struct abc arr[10]; // create an array of structures
arr[0].x=10;
arr[0].y= 20;
arr[0].z = 30;
printf("arr[0].x: %d \narr[0].y: %d \n arr[0].z: %d", arr[0].x, arr[0].y,
 arr[0].z);
return 0;

}

Output

arr[0].x: 10 
arr[0].y: 20 
 arr[0].z: 30

C –structure using Pointer Dot(.) operator is used to access the data using normal structure variable and arrow( ->) is used to access the data using a pointer variable. We can access the C structure in two ways.

1. Using a normal variable
2. Using pointer variable