NESTED STRUCTURES (OR) STRUCTURE WITHIN STRUCTURE

NESTED STRUCTURES (OR) STRUCTURE WITHIN STRUCTURE

            When a structure is declared as the member of another structure, such representation is known as nested structures (or) structure within structure.  The general format of nested structures is:

Syntax:             

              struct structure1

              {

                     - - - - - - - - - -

                     - - - - - - - - - -

              };

              struct structure2

              {

                     - - - - - - - - - -

                     - - - - - - - - - -

                     struct structure1 obj;

              };

/*  Example for structure within structure or nested structure  */

       #include<stdio.h>

       struct Address

       {

              char HouseNo[25];

              char City[25];

              char PinCode[25];

       };

       struct Employee

       {

           int Id;

           char Name[25];

           float Salary;

           struct Address Add;

       };

       void main()

       {

              int i;

              struct Employee E;

              printf("\n\tEnter Employee Id : ");

              scanf("%d",&E.Id);

              printf("\n\tEnter Employee Name : ");

              scanf("%s",&E.Name);

              printf("\n\tEnter Employee Salary : ");

              scanf("%f",&E.Salary);

              printf("\n\tEnter Employee House No : ");

              scanf("%s",&E.Add.HouseNo);

              printf("\n\tEnter Employee City : ");

              scanf("%s",&E.Add.City);

              printf("\n\tEnter Employee House No : ");

              scanf("%s",&E.Add.PinCode);

              printf("\nDetails of Employees");

              printf("\n\tEmployee Id : %d",E.Id);

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

              printf("\n\tEmployee Salary : %f",E.Salary);

              printf("\n\tEmployee House No : %s",E.Add.HouseNo);

              printf("\n\tEmployee City : %s",E.Add.City);

              printf("\n\tEmployee House No : %s",E.Add.PinCode);

       }