C++ allows you to define different types of variables. You can define a single variable that can hold data of multiple variables.

Defining a Structure:

struct [structure tag]
{
   member definition;
   member definition;
   ...
   member definition;
} [one or more structure variables];  

struct Books
{
   char  title[50];
   char  author[50];
   char  subject[100];
   int   book_id;
}book;  

We define variables inside structure and we have created object at last for that structure to access its elements.

Accessing Structure Members:

#include <iostream>
#include <cstring>
 
using namespace std;
 
struct Student
{
   char  name[50];
   char  address[50];
};
 
int main( )
{
   struct Student Stu1;       
   struct Student Stu2;       
 
   // book 1 specification
   strcpy( Stu1.name, "Himanshu Joshi");
   strcpy( Stu1.address, "Dehradun"); 

   // book 2 specification
   strcpy( Stu1.name, "Manoj Singh");
   strcpy( Stu1.address, "Nainital");

 
   // Print Stu1 info
   cout << "Stu1 name : " << Stu1.name <<endl;
   cout << "Stu1 address : " << Stu1.address <<endl;


   // Print Stu2 info
   cout << "Stu2 name : " << Stu2.name <<endl;
   cout << "Stu2 address : " << Stu2.address <<endl;


   return 0;
}