#include<stdio.h>
2
3
4 struct
5 {
6 char a;
7 int b;
8 int c;
9 }d;//as d is the variable of the structure and this is the structure without its name that’s why we can’t make the further variable in the main i.e struct<struct name> z is not possible;
10
11 struct abc//name of the structure
12 {
13 char p;
14 int q;
15 int r;
16 }s;//variable of the structure abc and we can make the further variables as struct abc z
18 typedef struct
19 {
20 char p;
21 int q;
22 int r;
23 }a;//its the not the variable its the name of the structure which is typeddef as a new datatype is “a”
24
25 int main()
26 {/************print the same the i.e the size of the structure****************/
27 printf(“size of the first structure is %d\n”,sizeof(d));
28 printf(“size of the second structure is %d\n”,sizeof(struct abc));
29 printf(“size of the third structure is %d\n”,sizeof(a));
30 }
