EXP 1.

1 Operator Precedence

#include <iostream.h>

Int main() {

int a = 20, b = 10, c = 15,d = 5, e;

e = (a + b) * c / d;

cout << "Value of (a + b) * c / d is :" << e << endl ;

e = ((a + b) * c) / d;

cout << "Value of ((a + b) * c) / d is :" << e << endl ;

e = (a + b) * (c / d);

cout << "Value of (a + b) * (c / d) is :" << e << endl ;

e = a + (b * c) / d;

cout << "Value of a + (b * c) / d is :" << e << endl ;

return 0;

Output

Value of (a + b) * c / d is :90

Value of ((a + b) * c) / d is :90

Value of (a + b) * (c / d) is :90

Value of a + (b * c) / d is :50

EXP 1.2 Roots of a Quadratic Equation

#include <iostream.h>

#include <math.h>

int main()
{

float a, b, c, x1, x2;

cout << "Enter coefficients a, b and c: ";

cin >> a >> b >> c;

x1 = (-b + sqrt((b*b)-(4*a*c))) / (2*a);

x2 = (-b - sqrt((b*b)-(4*a*c))) / (2*a);

cout << "Roots are real and different." << endl;

cout << "x1 = " << x1 << endl;

cout << "x2 = " << x2 << endl;

return 0;

Output

Enter coefficients a, b and c: 4

Roots are real and different.

x1 = -0.25

x2 = -1

EXP 2.1 Check if a year is leap year or not

#include <iostream.h>

int main()

int year;
 cout << "Enter a year: ";

cin >> year;

if (year % 4 == 0)

if (year % 100 == 0)

if (year % 400 == 0)

cout << year << " is a leap year.";

else

cout << year << " is not a leap year.";

else

cout << year << " is a leap year.";

else

cout << year << " is not a leap year.";

return 0;

Output

Enter a year: 2014

2014 is not a leap year.

EXP 2.2 Display Armstrong Numbers Between two Integers

#include <iostream.h>

int main()

int num1, num2, i, num, digit, sum;

cout << "Enter first number: ";

cin >> num1;

cout << "Enter second number: ";

cin >> num2;

cout << "Armstrong numbers between " << num1 << " and " << num2 << " are: " <<
endl;

for(i = num1; i <= num2; i++)

sum = 0;

num = i;

while(num > 0)

digit = num % 10;

sum = sum + digit * digit * digit;

num=num/10;

if(sum == i)
 {

cout << i << endl;

return 0;

Output

Enter first number: 100

Enter second number: 400

Armstrong numbers between 100 and 400 are:

153

370

371

EXP 2.3 Check Palindrome Number

#include <iostream.h>

int main()

int n, num, digit, rev = 0;

cout << "Enter a positive number: ";

cin >> num;

n = num;
 do

digit = num % 10;

rev = (rev * 10) + digit;

num = num / 10;

} while (num != 0);

cout << " The reverse of the number is: " << rev << endl;

if (n == rev)

cout << " The number is a palindrome";

else

cout << " The number is not a palindrome";

return 0;

Output

Enter a positive number: 12321

The reverse of the number is: 12321

The number is a palindrome

EXP 3.1 Display Multiplication table up to 10

#include <iostream.h>
int main()

int n;

cout << "Enter a positive integer: ";

cin >> n;

for (int i = 1; i <= 10; ++i) {

cout << n << " * " << i << " = " << n * i << endl;

return 0;

Output

Enter an integer: 5

5*1=5

5 * 2 = 10

5 * 3 = 15

5 * 4 = 20

5 * 5 = 25

5 * 6 = 30

5 * 7 = 35

5 * 8 = 40

5 * 9 = 45
5 * 10 = 50

EXP 3.2 Displaying numbers 100 to 1

#include <iostream.h>

int main()

int n;

for (int i = 100; i >= 1; i--) {

cout << i << endl;

return 0;

EXP 3.3 Print Floyd's Triangle.

23

456

7 8 9 10

#include <iostream.h>

int main()

{
 int rows, number = 1;

cout << "Enter number of rows: ";

cin >> rows;

for(int i = 1; i <= rows; i++)

for(int j = 1; j <= i; j++)

cout << number << " ";

number++;

cout << endl;

return 0;

EXP 3.4 Program to print full pyramid using *

**

* * *

* * * *

* * * * *
#include<iostream.h>

#include<conio.h>

int main()

int r,c,k,rows;

clrscr();

cout<<"Enter number of rows: \n";

cin>>rows;

cout<<endl;

for(r=1;r<=rows;r++)

for(k=1;k<=rows-r;k++)

cout<<" ";

for(c=1;c<=r;c++)

cout<<" * ";

cout<<endl;

getch();

return 0;
}

EXP 4.1 program to find median of two sorted arrays

#include <iostream.h>

#include<conio.h>

void main()

int a1[50], a2[50], a3[100], m, n, i, j, k = 0;

clrscr();

cout<<"\n Enter size of array Array 1: ";

cin>>m;

cout<<"\n Enter sorted elements of array 1: \n";

for (i = 0; i < m; i++)

cin>>a1[i];

cout<<"\n Enter size of array 2: ";

cin>>n;

cout<<"\n Enter sorted elements of array 2: \n";

for (i = 0; i < n; i++)

{
 cin>>a2[i];

i = 0;

j = 0;

while (i < m && j < n)

if (a1[i] < a2[j])

a3[k] = a1[i];

i++;

else

a3[k] = a2[j];

j++;

k++;

if (i >= m)

while (j < n)
 {

a3[k] = a2[j];

j++;

k++;

if (j >= n)

while (i < m)

a3[k] = a1[i];

i++;

k++;

cout<<"\n After merging: \n";

for (i = 0; i < m + n; i++)

cout<<" "<<a3[i];

int len=m+n;

int mid = len/ 2;

 float median;

if (len % 2)

median = a3[mid] ;

cout << "\nThe median is: " << median << endl;

else

median = (a3[mid]+a3[mid-1])/2.0;

cout << "\nThe median is: " << median << endl;

getch();

EXP 4.2 program to find two repeating elements in a given array

#include<iostream.h>

#include<conio.h>

void main()

int i,arr[20],j,no;

clrscr();

cout<<"Enter Size of array: ";

 cin>>no;

cout<<"Enter any "<<no<<" num in array: ";

for(i=0;i<no;i++)

cin>>arr[i];

cout<<"Dublicate Values are: ";

for(i=0; i<no; i++)

for(j=i+1;j<no;j++)

if(arr[i]==arr[j])

cout<<"\n"<<arr[i];

getch();

Output

Enter Size of Array : 5

Enter any 5 elements in Array:

54523

Duplicate Elements are:

5

EXP 4.3 program to find smallest and second smallest element in a given array

#include <iostream.h>

int main()

int arr[50], n;

cout<<"\n Enter number of elements in array: ";

cin>>n;

cout<<"\n Enter array elements: ";

for(i=0; i<n; i++)

cin>>arr[i];

int small,next_small=INT_MAX;

small = arr[0];

for(int i=1;i<len;i++)

if(arr[i] < small)

next_small = small;

small = arr[i];

else if(arr[i] < next_small and arr[i] > small)

next_small = arr[i];

}
 cout << "Smallest and the second smallest numbers are respectively "<< small
<< " and " << next_small <<endl;

return 0;

EXP 4.4 program to find missing number from array

#include <iostream.h>

int main()

int n=5,i;

int arr[4];

cout<<"Enter sequential array elements: ";

for(i=0; i<n; i++)

cin>>arr[i];

int temp;

temp = ((n+1)*(n+2))/2; //sum of n elements is n(n+1)/2,

for (i = 0; i<n; i++) //here one no. is missing so we use (n+1)(n+2)/2

temp -= arr[i];

int missingNo =temp;

 cout<<"Missing Number is: "<<missingNo;

return 0;

EXP6.1 Write a c++ program to declare a class book having data members
book_name, author and price. Accept and display data for book having maximum
price.

#include<iostream.h>

#include<conio.h>

#include<string.h>

class Book

int no_of_pages;

char book_name[50];

public:

float price;

void getdata()

cout<<"Enter Book name:-> ";

cin>>book_name;

cout<<"Enter Book Price:->";

cin>>price;

cout<<"Enter No of pages:-> ";

cin>>no_of_pages;
 }

void display()

cout<<"\nBook name:-> "<<book_name;

cout<<"\nBook Price:->"<<price;

cout<<"\nNo of pages:-> "<<no_of_pages;

};

void main()

Book b1,b2;

clrscr();

b1.getdata();

b2.getdata();

if(b1.price>b2.price)

b1.display();

else

b2.display();

getch();

}
EXP 6.2 Write a c++ program to declare a class staff having data members name,
salary, DA, HRA and calculate gross salary. Accept and display data for one staff.

Where DA=74.5% of basic, HRA=30% of basic, gross_salary= basic+DA+HRA

#include<iostream.h>

#include<conio.h>

class staff

float basic,gross_sal;

public:

void accept()

cout<<"Enter Basic Salary of Staff: ";

cin>>basic;

float display ();

};

float staff :: display()

{ float DA=74.5, HRA=30;

gross_sal=(basic*DA/100)+(basic*HRA/100)+basic;

return(gross_sal);

void main()

clrscr();
 staff s1;

s1.accept();

cout<<"Gross Salary of Employee "<<s1.display();

getch();

EXP7.1 Employee details having salary greater than 25000/-

#include<iostream.h>

#include<conio.h>

class Employee

int emp_id;

char emp_name[20];

public:

float emp_salary;

void accept()

cout<<"\nEnter Employee id=> ";

cin>>emp_id;

cout<<"Enter employee Name=> ";

cin>>emp_name;

cout<<"Enter employee salary=> ";

cin>>emp_salary;

}
 void display()

cout<<endl<<"Employee id=> "<<emp_id<<endl;

cout<<"Employee NAme=> "<<emp_name<<endl;

cout<<"Employee Salary=> "<<emp_salary;

};

void main()

int i;

clrscr();

Employee e[5];

for(i=0;i<5;i++)

e[i].accept();

cout<<"Employees having Salary greater than 25000 are:\n";

for(i=0;i<5;i++)

if(e[i].emp_salary>25000)

e[i].display();

getch();
}

EXP7.2 City and their population

#include<iostream.h>

#include<conio.h>

class City

long int population;

char city_name[20];

public:

void accept()

cout<<"\nEnter City Name=> ";

cin>>city_name;

cout<<"Enter Population of the City=> ";

cin>>population;

void display()

cout<<endl<<"City Name=> "<<city_name<<endl;

cout<<"Population=> "<<population<<endl;

}
};

void main()

int i;

clrscr();

City c[10];

for(i=0;i<10;i++)

c[i].accept();

cout<<"\nCity details are:\n";

for(i=0;i<10;i++)

c[i].display();

getch();

EXP 8.1 Swap variables using friend function

#include<iostream.h>

#include<conio.h>

class swap

int a,b;
 public:

void getab()

cout<<"\n\tEnter Value of a:->";

cin>>a;

cout<<"Enter value of b:->";

cin>>b;

friend void swapping(swap s1);

};

void swapping(swap s1)

{ int t;

t=s1.a;

s1.a=s1.b;

s1.b=t;

cout<<"After Swapping a= "<<s1.a<<"\t b= "<<s1.b;

void main()

clrscr();

swap s;

s.getab();

swapping(s);
getch();

EXP 8.2

#include<iostream.h>

#include<conio.h>

class DM

float distm; //distance in meters

public:

DM()

cout<<"\n\tEnter ditance in meters:->";

cin>>distm;

friend void totaldist(DM d1, DM d2);

};

void totaldist(DM d1, DB d2)

float dist =d1.distm + d2.distm;

cout<<"\nTotal Distance in Meters => "<<dist;

void main()

clrscr();
 DM d1;

DM d2

totaldist(d1,d2);

getch();

EXP 10.1 Arithmetic operations on two numbers using constructor

#include<iostream.h>

#include<conio.h>

class Number

int x,y;

public:

Number()

x=15;

y=5;

Number(int a,int b)

x=a;

y=b;

void display()

{
 cout<<"\nx= " <<x<<"\t"<<"y= "<<y;

cout<<endl<<"Addition= "<<x+y<<endl;

cout<<"Subtraction= "<<x-y<<endl;

cout<<"Multiplication= "<<x*y<<endl;

cout<<"Division= "<<x/y<<endl;

~Number()

cout<<"\nMemory released";

};

void main()

clrscr();

Number n1;

Number n2(45,15);

cout<<"\nFor Object 1:\n";

n1.display();

cout<<"\nFor Object 2:\n";

n2.display();

getch();

}
EXP10.2 Product Details using Overloaded Constructors

#include<iostream.h>

#include<conio.h>

#include<string.h>

class Product

int prod_id;

float prod_price;

char prod_name[25];

public:

Product()

prod_id=001;

prod_price=500;

strcpy(prod_name,"Photo Frame");

Product(int i,float p,char n[25])

prod_id=i;

prod_price=p;

strcpy(prod_name,n);

Product(Product &pc)

prod_id=pc.prod_id;
 prod_price=pc.prod_price;

strcpy(prod_name,pc.prod_name);

void displayprod()

cout<<"\nProduct ID= " <<prod_id<<"\n"<<"Product Price=

"<<prod_price;

cout<<"\n"<<"Product Name= "<<prod_name<<endl;

~Product()

cout<<"\nMemory released";

};

void main()

clrscr();

Product p1;

Product p2(002,1000,"Fan");

cout<<"\nFor Product 1:";

p1.displayprod();

cout<<"\nFor Product 2:";

p2.displayprod();
 cout<<"\nFor Product 3:";

Product p3(p1);

p3.displayprod();

getch();

Exp11.1

#include<iostream.h>

#include<conio.h>

class student

protected :

int rollno;

char name[25];

public:

void get();

void put();

};

void student :: get()

cout<<"\nEnter rollno: ";

cin>>rollno;

cout<<"Enter Name: ";

 cin>>name;

void student :: put()

cout<<"\nRoll No: "<<rollno;

cout<<"\nName: "<<name;

class marks : public student

protected:

int m1,m2,m3,total;

float average;

public:

void getmarks();

void putmarks();

};

void marks :: getmarks()

cout<<"Enter Marks of sub1: ";

cin>>m1;

cout<<"Enter Marks of sub2: ";

cin>>m2;

cout<<"Enter Marks of sub3: ";

cin>>m3;
}

void marks :: putmarks()

put();

cout<<"\nMark obtained in sub1: "<<m1;

cout<<"\nMarks obtained in sub2: "<<m2;

cout<<"\nMarks obtained in Sub3: "<<m3;

total=m1+m2+m3;

average=total/3;

cout<<"\nTotal Marks: "<<total;

cout<<"\nAverage Marks: "<<average;

void main()

marks S1;

clrscr();

S1.get();

S1.getmarks();

S1.putmarks();

getch();

}
Exp11.2

#include<iostream.h>

#include<conio.h>

class Employee

int emp_id;

char emp_designation[20];

char emp_name[25];

public:

void accept()

cout<<"Enter Employee id: ";

cin>>emp_id;

cout<<"Enter employee Name: ";

cin>>emp_name;

cout<<"Enter employee Designation: ";

cin>>emp_designation;

void display()

cout<<"\nEmployee id: "<<emp_id<<endl;

cout<<"Employee Name: "<<emp_name<<endl;

cout<<"Employee Designation: "<<emp_designation<<endl;

};
class Salary:public Employee

float basic,gross_sal;

public:

void accept_salary()

accept();

cout<<"Enter Basic Salary of Employee: ";

cin>>basic;

void display_salary();

};

void Salary :: display_salary()

float DA=74.5, HRA=30;

gross_sal=(basic*DA/100)+(basic*HRA/100)+basic;

display();

cout<<"Gross Salary: "<<gross_sal;

void main()

clrscr();

Salary s1;
 s1.accept_salary();

cout<<"\nDetails of Employee "<<endl;

s1.display_salary();

getch();

//Exp 12.1

#include<iostream.h>

#include<conio.h>

class Person

protected :

int age;

char name[25];

char gender;

public:

void get_info();

void put_info();

};

void Person :: get_info()

cout<<"Enter Name:-\t";

cin>>name;

cout<<"Enter age:-\t";

cin>>age;
 cout<<"Enter Gender:-\t";

cin>>gender;

void Person :: put_info()

cout<<"\nName:-\t"<<name;

cout<<"\nAge:-\t"<<age;

cout<<"\nGender:-\t"<<gender;

class Employee : public Person

protected:

int emp_id;

float salary;

char company[25];

public:

void get_emp_details();

void put_emp_details();

};

void Employee :: get_emp_details()

cout<<"Enter Employee ID:-\t";

cin>>emp_id;

cout<<"Enter Company Name:-\t";

cin>>company;
 cout<<"Enter Salary:-\t";

cin>>salary;

void Employee :: put_emp_details()

cout<<"\nEmployee Id:-\t"<<emp_id;

cout<<"\nCompany Name:-\t"<<company;

cout<<"\nSalary:-\t"<<salary;

class Programmer : public Employee

int no_of_prog_lang_known;

public:

void accept()

cout<<"Enter no. of programming languages known:-\t";

cin>>no_of_prog_lang_known;

void display();

};

void Programmer :: display()

put_info();

put_emp_details();
 cout<<"\nNo. of programming languages known:-
\t"<<no_of_prog_lang_known;

void main()

clrscr();

Programmer r1;

r1.get_info();

r1.get_emp_details();

r1.accept();

cout<<"\nDetails of programmer:\n";

r1.display();

getch();

//Exp 12.2

#include<iostream.h>

#include<conio.h>

class Car

protected :

char car_type[25];

public:

void get_car_type();
 void put_car_type();

};

void Car :: get_car_type()

cout<<"Enter car_type:-\t";

cin>>car_type;

void Car :: put_car_type()

cout<<"\nCar Type:-\t"<<car_type;

class Brand : public Car

protected:

int speed;

char brand_name[25];

public:

void get_brand_details();

void put_brand_details();

};

void Brand :: get_brand_details()

cout<<"Enter Brand Name of car:-\t";

cin>>brand_name;

cout<<"Enter Speed:-\t";
 cin>>speed;

void Brand :: put_brand_details()

cout<<"\nSpeed:-\t\t"<<speed;

cout<<"\nBrand Name :-\t"<<brand_name;

class Model : public Brand

char model_name[10];

long float price;

public:

void get_model_details()

cout<<"Enter Model Name:-\t";

cin>>model_name;

cout<<"Enter Price:-\t";

cin>>price;

void put_model_details();

};

void Model :: put_model_details()

put_car_type();
 put_brand_details();

cout<<"\nModel Name:-\t"<<model_name;

cout<<"\nPrice:-\t"<<price;

void main()

clrscr();

Model r1;

r1.get_car_type();

r1.get_brand_details();

r1.get_model_details();

cout<<"\nCar Details:\n";

r1.put_model_details();

getch();

//Exp 13.1

#include <iostream.h>

#include<conio.h>

class Area

public:

float area(float l,float b)

{
 return l*b;

};

class Perimeter

public:

float perimeter(float l,float b)

return 2*(l+b);

};

class Rectangle : public Area, public Perimeter

private:

float length, breadth;

public:

void get_data( )

cout<<"Enter length: ";

cin>>length;

cout<<"Enter breadth: ";

cin>>breadth;

}
 void show()

cout<<"Area = "<<area(length,breadth);

cout<<"\nPerimeter = "<<perimeter(length,breadth);

};

int main()

clrscr();

Rectangle r;

r.get_data();

cout<<"\nArea & Perimeter of Rectangle:\n";

r.show();

getch();

return 0;

//Exp 13.2

#include<iostream.h>

#include<conio.h>

class Cricketer

char name[15];
 int no_of_matches;

public:

void getinfo()

cout << "Enter Name of cricketer:";

cin>>name;

cout << "Enter No. of Matches played:";

cin>>no_of_matches;

void putinfo()

cout << "\n\nName of cricketer:" <<name << "\n";

cout << "No. of Matches played:"<<no_of_matches;

};

class Batsman : virtual public Cricketer

long int no_of_runs;

public:

void getruns()

cout << "Enter Total No.of Runs:";

cin>>no_of_runs;
 }

void putruns()

cout << "\nTotal No.of Runs:" << no_of_runs;

};

class Bowler : public virtual Cricketer

int no_of_wickets;

public:

void getno_of_wickets()

cout << "Enter Total No.of Wickets:";

cin>>no_of_wickets;

void putno_of_wickets()

cout << "\nTotal no_of_wickets:" << no_of_wickets;

};

class allrounder : public Batsman, public Bowler

{

int total;

public:

void display()

putinfo();

putruns();

putno_of_wickets();

};

void main()

allrounder obj;

clrscr();

obj.getinfo();

obj.getruns();

obj.getno_of_wickets();

cout<<"\nDetails of Allrounder Cricketer:\n";

obj.display();

getch();

//EXP14.1

#include<iostream.h>
#include<conio.h>
#include<string.h>
class Book
{
char author[10];
char book_name[10];
float price;
public:

void getdata()
{

cout<<"Enter Book name:-> ";

cin>>book_name;
cout<<"Enter Book Price:->";
cin>>price;
cout<<"Enter Author Name:-> ";
cin>>author;
}
void display()
{

cout<<"\nBook name:-> "<<book_name;

cout<<"\nBook Price:->"<<price;
cout<<"\nAuthor:-> "<<author;
}

};

void main()
{
Book b1,*bptr;
clrscr();
bptr=&b1;
bptr->getdata();
(*bptr).display();
getch();
}

//EXP142.2

#include<iostream.h>
#include<conio.h>
class box
{
float height,width,breadth;
public:
void get()
{
cout<<"\n (1).Enter height =";
cin>>height;
cout<<"\n (2).Enter width =";
cin>>width;
cout<<"\n (3).Enter breadth =";
cin>>breadth;
}
void area();
void volume();
};
void box::area()
{
cout<<endl<<"\n Area of box = "<<(width*height)<<"cm^2";

}
void box::volume()
{
cout<<endl<< "\nVolume of box ="<<(width*breadth*height)<<"cm^3";
}
int main()
{
clrscr();
cout<<"*** calculation of volume and area of box ***"<<endl;
box b;
box *ptr;
ptr=&b;
 ptr->get();
(*ptr).area();
(*ptr).volume();
getch();
return 0;
}

//EXP14.3

#include<iostream.h>
#include<conio.h>
class birthday
{
char name[25];
int day;
int month;
int year;
public:
void get()
{
cout<<"\nenter the name : ";
cin>>name;
cout<<"\nenter the birth day : ";
cin>>day;
cout<<"\nenter the birth month : ";
cin>>month;
cout<<"\nenter the birth year : ";
cin>>year;
}
void display()
{
cout<<"\n NAME ="<<name;
cout<<"\n BIRTH DATE ="<<day<<"/"<<month<<"/"<<year;
}
};
int main()
{
clrscr();
 int i=0;
birthday b[5];
birthday *B;
B=&b[0];

for(i=0;i<5;i++)
{
B->get();
B++;
}
cout<<" * * * BIRTHDATE INFORMATION * * * "<<endl;
B=&b[0];
for(i=0;i<5;i++)
{
B->display();
B++;
}
getch();
return 0;
}

EXP 15.1

#include<iostream.h>
#include<conio.h>
class polygon
{
int width,height;
public:
void get()
{
cout<<"\n Enter width & height:";
cin>>width>>height;
}
int wid()
{
return width;
 }
int heig()
{
return height;
}
};
class triangle:public polygon
{
public:
void area()
{
float a;
int w=wid();
int h=heig();
a=0.5*w*h;
cout<<"\n Area of triangle: "<<a;
}
};
class rectangle:public polygon
{
public:
void area()
{
int b=wid();
int l=heig();
float a=l*b;
cout<<"Area of rectangle: "<<a;
}
};
int main()
{
triangle t, *tptr;
rectangle r, *rptr;
tptr=&t;
tptr->get();
tptr->area();
rptr=&r;
rptr->get();
 rptr->area();
getch();
return 0;
}

EXP 16.1

#include <iostream.h>

#include<conio.h>

class Check

private:

int i;

public:

Check()

i=0;

Check operator ++ ()

Check temp;

temp.i = i++;

return temp;

Check operator -- ()
 {

Check temp;

temp.i = i--;

return temp;

void Display()

{ cout << "i = "<< i <<endl; }

};

int main()

clrscr();

Check obj, obj1;

obj.Display();

obj1.Display();

cout<<"Postincrement \n";

obj++;

obj.Display();

cout<<"Postdecrement \n";

obj--;

obj.Display();
 getch();

return 0;

//EXP 17.1 Complex Number addition operator overloading

#include<iostream.h>
class complex
{
public:
int real;
int img;
complex()
{
real=img=0;
}
complex(int x,int y)
{
real=x;
img=y;
}
void show()
{
cout<<"\n"<<real<<"+"<<img<<"i";
}
friend complex operator+(complex c,complex d);
};

//operator+ is not part of complex class so have 2 args for + operator overload.
complex operator+(complex c, complex f)
{
complex ans;
ans.real=c.real+f.real;
ans.img=c.img+f.img;
return(ans);
}
int main()
{
complex x(1,2), y(0,7);
complex c=x+y; //overloaded + is called here
c.show();
}

//EXP 17.2 PROGRAM OF OVERLOADING ARITHMETIC OPERATORS

#include<iostream.h>
#include<conio.h>

class BINARY
{
float no;
public:
BINARY(){}
void getdata()
{
cout<<"\n ENTER AN FLOATING NUMBER :";
cin>>no;
}
void putdata()
{
cout<<"\n\nANSWER IS :"<<no;
}
BINARY operator+(BINARY);
BINARY operator*(BINARY);
BINARY operator-(BINARY);
BINARY operator/(BINARY);
};
BINARY BINARY::operator+(BINARY a)
{
BINARY temp;
temp.no=no+a.no;
return temp;
}
BINARY BINARY::operator*(BINARY b)
{
BINARY temp;
temp.no=no*b.no;
return temp;
}
BINARY BINARY::operator-(BINARY b)
{
BINARY temp;
temp.no=no-b.no;
return temp;
}
BINARY BINARY::operator/(BINARY b)
{
BINARY temp;
temp.no=no/b.no;
return temp;
}

main()
{
clrscr();
Binary a,b,c;
a.getdata();
b.getdata();

cout<<"\n\nAFTER ADDITION OF TWO OBJECTS";

c=a+b;
c.putdata();
cout<<"\n\nAFTER MULTIPLICATION OF TWO OBJECTS";
c=a*b;
c.putdata();
cout<<"\n\nAFTER SUBSTRACTION OF TWO OBJECTS";
c=a-b;
c.putdata();
cout<<"\n\nAFTER DIVISION OF TWO OBJECTS";
c=a/b;
c.putdata();
 getch();
}

//EXP 17.3 Definesa Class String and Overload == Operator to Compare Two Strings

#include<iostream.h>
#include<stdio.h>
#include<string.h>
class String
{
char str[20];
public:
void getdata() //function to read the string
{
gets(str);
}
int operator==(String s)
{
if(!strcmp(str,s.str))
return 1;
else
return 0;
}
};
void main()
{
String s1,s2;
cout<<“Enter first string:”;
s1.getdata();
cout<<“Enter second string:”;
s2.getdata();

if(s1==s2) //here the operator function will be called

{
cout<<“\nStrigs are Equal\n”;
}
else
{
 cout<<“\nStrings are Not Equal\n”;
}
return 0;
}

//EXP 18.1 Program to interchange the values of two int , float and char using
function overloading

#include<iostream.h>
#include<conio.h>
void swap(int &,int &);
void swap(float &,float &);
void swap(char &,char &);
main()
{
clrscr();
int I1, I2;
float F1, F2;
char C1, C2;
cout<<"\n Enter the value of I1 & I2 = ";
cin>>I1>>I2;
cout<<"\n Enter the value of F1 & F2 = ";
cin>>F1>>F2;
cout<<"\n Enter the value of C1 & C2 = ";
cin>>C1>>C2;
cout<<"\n ********* Before Swap() **********"<<endl;
cout<<"\n Values of int :"<<endl;
cout<<"\t I1 = "<<I1<<"\t I2 = "<<I2<<endl;
cout<<" Values of float :"<<endl;
cout<<"\t F1 = "<<F1<<"\t F2 = "<<F2<<endl;
cout<<" Values of char :"<<endl;
cout<<"\t Value of C1 = "<<C1<<"\t C2 = "<<C2<<endl;
cout<<"\n ********* After Swap() **********"<<endl;
cout<<"\n Values of int :"<<endl;
swap(I1,I2);
cout<<"\t I1 = "<<I1<<"\t I2 = "<<I2<<endl;
cout<<" Values of float :"<<endl;
swap(F1,F2);
 cout<<"\t F1 = "<<F1<<"\t F2 = "<<F2<<endl;
cout<<" Values of char :"<<endl;
swap(C1,C2);
cout<<"\t Value of C1 = "<<C1<<"\t C2 = "<<C2<<endl;
getch();
return 0;
}
void swap(int &v1,int &v2)
{
int temp;
temp=v2;
v2=v1;
v1=temp;
}
void swap(float &v1,float &v2)
{
float temp;
temp=v2;
v2=v1;
v1=temp;
}
void swap(char &v1,char &v2)
{
char temp;
temp=v2;
v2=v1;
v1=temp;
}

//EXP 18.3 C++ program to find area of square,rectangle,circle and triangle by using
function overloadingC++

#include<iostream.h>
int area(int);
int area(int,int);
float area(float);
float area(float,float);
int main()
{
int s,l,b;
float r,bs,ht;
cout<<"Enter side of a square:";
cin>>s;
cout<<"Enter length and breadth of rectangle:";
cin>>l>>b;
cout<<"Enter radius of circle:";
cin>>r;
cout<<"Enter base and height of triangle:";
cin>>bs>>ht;
cout<<"Area of square is"<<area(s);
cout<<"\nArea of rectangle is "<<area(l,b);
cout<<"\nArea of circle is "<<area(r);
cout<<"\nArea of triangle is "<<area(bs,ht);
}
int area(int s)
{
return(s*s);
}
int area(int l,int b)
{
return(l*b);
}
float area(float r)
{
return(3.14*r*r);
}
float area(float bs,float ht)
{
return((bs*ht)/2);
}

//EXP 19.2 Program to merge contents of two files into a third file

#include <iostream.h>
#include <stdlib.h> // For exit()
#include <fstream.h>
#include <conio.h>
int main()
{
clrscr();
ifstream inf1("file1.txt",ios::in);
ifstream inf2;
inf2.open("file2.txt",ios::in);

ofstream outf;
outf.open("file3.txt",ios::out);
char c;

if (inf1.fail() || inf2.fail() || outf.fail())

{
cout<<"Could not open files";
exit(0);
}

while (!inf1.eof())
{
inf1.get(c);
outf.put(c);
}

while (!inf2.eof())
{
inf2.get(c);
outf.put(c);
}
outf.close();
cout<<"Merged file1.txt and file2.txt into file3.txt\n\n";

inf1.close();
inf2.close();
outf.close();
getch();
return 0;
}
//EXP 19.3 Program to print contents of file

#include <iostream.h>
#include <stdlib.h> // For exit()
#include <fstream.h>
#include <conio.h>
int main()
{
clrscr();
ifstream inf;

char filename[100], c;

cout<<"Enter the filename to open \n";

cin>> filename;

inf.open(filename, ios::in);
if (inf.fail())
{
cout<<"Cannot open file \n";
exit(0);
}

while (!inf.eof())
{
inf.get(c);
cout<<c;
}

inf.close();
getch();
return 0;
}