Structure within structure

A structure can be member of another structure . This is known as nesting of structure or structure within structure.

Ex,

 struct date

  {

          int d;

          int m;

          int y;

};

struct student

{

          int no;

          char name[20];

          struct date birthdate;

};

Here, the third member of structure is of type date which itself a structure.The variable of structure can be declared as:

struct student s1;

The member birthdate can be accessed as:

s1.birthdate.d=21;

The structure definition can also be written as:

          struct student

          {

          int no;

          char name[20];

          struct date

          {

                   int d;

                   int m;

                   int y;

          }birthdate;

};

Example

// Structure within structure

#include<stdio.h>

#include<conio.h>

struct stud

{

          int sno;

          char sname[15];

          struct bdate

           {

               int d;

               int m;

               int y;

           }b;

};

void main()

{

  struct stud s;

  clrscr();

  printf("\n Enter roll no : ");

  scanf("%d",&s.sno);

  fflush(stdin);

  printf("\n Enter name    : ");

  gets(s.sname);

  printf("\n Enter birth date : dd-mm-yy : ");

  scanf("%d %d %d",&s.b.d,&s.b.m,&s.b.y);

  printf("\n----------------------- ");

  printf("\n Roll number : %d",s.sno);

  printf("\n Name        : %s",s.sname);

  printf("\n Birth date  : %d - %d - %d",s.b.d,s.b.m,s.b.y);

  getch();

  }

Posted By : Ruchita Pandya