Item readData (Item t)
{
cout << "Enter Item number'' << endl;
cin >> t.itemno,
cout << "Enter price'' << endl:
cin >> t.price;
return t;
}

A structure without a name/tag is called anonymous structure.
struct
{
long rollno;
int age;
float weight;
} student;
The student can be referred as reference name to the above structure and the elements can be accessed like student.rollno, student.age and student.weight .

readData( date d)
void
{
cout << "Enter day" << endl;
cin >> d.dd;
cout << "Enter month" << endl;
cin>>d.mm:
cout << "Enter year" << endl;
cin >> d.yy;
}
void readData(item t)
{
cout << "Enter item id'' << endl;
cin >> t.itemid;
cout << "Enter item name'' << endl:
cin >> t.name;
cout << "Ente item price'' << endl;
cin >> t.price;
cout << "Enter date of manufacuter'' << endl;
cin >> t.date;
}

Once objects of a structure type are declared, their members can be accessed directly. The syntax for that is using a dot(.) between the object name and the member name.
Example: student.name;
if the members are a pointer type, then' is used to access the members.
Let name be a character pointer in student like char*name
It can be accessed student  → name.
struct
{
long rolino;
int age,
float weight;
student;
}
The student can be referred as reference name to the above structure and the elements can be accessed like student.roll no, student.age, and student.weight.

(a) output
1. 0.250.73
2. Named structure point is created 
(b) 1. No output; Error
2. Anonymous structure point is created.

struct movie
{
char m_name[10];
char m_lang[10];
float ticket_cost = 50;
} Movie; .
int main()
{
get(Movie _m_name);
cin>>Movie _m_lang;
return 0;
}

The structure declared within another structure is called a nested structure
Example:
struct Student
{
int age;
float height, weight;
struct dob
{
int date;
char month[4];
int year;
};
}sl;

(i) A structure variable can be passed to a function in a similar way of passing any argument that is of built-in data type.
(ii) if the structure itself is an argument, then it is called "call by value".
(iii) If the reference of the structure is passed as an argument then it is called, "call by reference".

#include< iostream >
using namespace std;
int main()
{
char name[20];
cout << "Enter your name'' << endl;
cin.get(name,20);
cout << "Your name:" << name«endl;
return 0;
}
output:
Enter your name : xxxx xxxx
Your name: xxxx xxxx

"An array is a collection of variables of the same type that are referenced by a common name".
An array is also a derived datatype in C++.
There are different types of arrays used in C++. They are:
1. One-dimensional arrays
2. Two-dimensional arrays
3. Multi-dimensional arrays