A structure is a user defined data type in C. A structure creates a data type that can be used to group items of possibly different types into a single type.
How to create a structure?
‘struct’ keyword is used to create a structure. Following is an example.
struct address {
char name[50];
char street[100];
char city[50];
char state[20];
int pin;
};
How to initialize structure members?
Structure members cannot be initialized with declaration. For example the following C program fails in compilation.
struct Point {
int x = 0; // COMPILER ERROR: cannot initialize members here
int y = 0; // COMPILER ERROR: cannot initialize members here
};
#include<stdio.h>
struct Point
{
int x, y;
};
int main()
{
struct Point p1 = {0, 1};
// Accessing members of point p1
p1.x = 20;
printf ("x = %d, y = %d", p1.x, p1.y);
return 0;
}
How to access structure elements?
Structure members are accessed using dot (.) operator.
