The document contains code snippets demonstrating the use of structures in C++. The first snippet defines a student structure with name, marks and percentage fields, and takes input from the user to populate a student structure variable and output the details. The second snippet defines nested structures - an address structure nested within an employee structure, and takes input to populate an employee record including name, designation, address fields and salary. The third snippet defines a union with fields for physics, chemistry, math marks and total/percentage, and calculates total and percentage from marks input by the user.

2. EXTRA

3. EXTRA
++

4. ++ NOTES

5. NOTES
++

6. #include<iostream.h>
#include<conio.h>
struct student
{
char name[20];
int marks;
float per;
};
void main()
{
struct student stu;
clrscr();
cout<<“Enter Student Namen”;
gets(stu.name);
cout<<“Enter Student Marksn”;
cin>>stu.marks;
cout<<“Enter Percentagen”;
cin>>stu.per;
cout<<“NAME :”;
puts(stu.name);
cout<<“MARKS :”<<stu.marks<<“n”;
cout<<“PERCENTAGE :”<<stu.per<<“n”;
getch();
}
EXTRA

7. #include<iostream.h> Structure within structure
#include<conio.h>
struct address
{
char street[10];
char city[10];
char state[10];
};
struct employee
{
char name[20];
char des[10];
struct address add;
int salary;
};
void main()
{
struct employee emp;
clrscr();
cout<<"Enter Employee detailsn”;
cout<<"Enter Namen";
gets(emp.name);
EXTRA

8. cout<<"Enter Designationn”;
gets(emp.des);
cout<<"Enter Addressn";
cout<<"Enter street n”;
gets(emp.add.street);
cout<<"Enter Cityn";
gets(emp.add.city);
cout<<"Enter Staten";
gets(emp.add.state);
cout<<"Enter Slalryn”;
cin>>emp.salary;
cout<<"EMPLOYEE DETAILSn”;
cout<<"NAME :”;
puts(emp.name);
cout<<"DESIGNATION :”;
puts(emp.des);
cout<<"ADDRESS :n”;
cout<<"STREET :”;
puts(emp.add.street);
cout<<"CITY :”;
puts(emp.add.city);
cout<<"STATE :";
puts(emp.add.state);
cout<<"SALARY :”<<emp.salary<<“n” ;
getch();
}
EXTRA

9. EXTRA
++

10. NOTES
++

11. #include<stdio.h>
#include<conio.h>
union marks
{ int phy;
int che;
int mat;
int total;
float per;
}s1;
void main()
{
clrscr();
cout<<“Enter Marks detailsn”;
cout<<"Enter physics marksn”;
cin>>s1.phy;
cout<<"Enter chemistry marksn”;
cin>>s1.che;
cout<<"Enter Math Marksn”;
cin>>s1.mat;
s1.total=s1.phy+s1.che+s1.mat;
cout<<"Total Marks = “<<s1.total <<“n”;
s1.per=s1.total*1/3;
cout<<"Percentage = ”<<s1.pern”;
getch();
}
EXTRA