Nested Structure in C

 Nested structure in C is nothing but structure within structure. One structure can be declared inside other structure as we declare structure members inside a structure. The structure variables can be a normal structure variable or a pointer variable to access the data. You can learn below concepts in this section.

•          Structure within structure in C using normal variable
•          Structure within structure in C using pointer variable

Structure within structure  using normal variable

#include<stdio.h>

struct Department

{

    int dept_id;

    char dept_name[50];

};

struct Employee

{

    int id;

    char name[20];

    float sal;

    // structure within structure

    struct Department dept;

}emp;

void main()

{

    struct Employee emp = {12,"Sagar",15000,53,"Testing"};

printf("Department Id is:%d \n" ,emp.dept.dept_id);

printf("Department Name is:%s \n",emp.dept.dept_name);

 printf(" Id is: %d \n", emp.id);

 printf(" Name is: %s \n", emp.name);

 printf(" Salary is: %f \n\n", emp.sal);

    

 getchar();

}

Structure within structure  using pointer variable

#include<stdio.h>

struct Department

{

    int dept_id;

    char dept_name[50];

};

struct Employee

{

    int id;

    char name[20];

    float sal;

    // structure within structure

    struct Department dept;

}emp,*empptr;

void main()

{

    struct Employee emp = {12,"Sagar",15000,53,"Testing"};

    empptr=&emp;

  printf(" Department Id is: %d \n",empptr->dept.dept_id);

  printf(" Department Name is: %s \n",empptr->dept.dept_name);

  printf(" Id is: %d \n", empptr->id);

  printf(" Name is: %s \n",empptr-> name);

  printf(" Salary is: %f \n\n",empptr-> sal);

   

   getchar();

}

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