C++ Practicle File

Object Oriented Programming Using C &C++ Paper code: BCA301 Date: …./….
/2021
Program 1:- Write a program to print my name using cin and cout.
#include<iostream>
using namespace std;
int main()
{
char a[5];
cout<<"enter your name"<<"\n";
cin>>a;
cout<<"the name is"<<a;
return 0;
}
Output:-
KHUSHI BIRLA 1
Object Oriented Programming Using C &C++ Paper code: BCA301 Date: …./…./2021
Program 2:- Write a program to display number from 1 to 10 using loop.
#include<iostream>
int main()
{int i;
cout<<"Number's are: ";
for(i=0;i<=10;i++)
cout<<"\n"<<i;
return 0;
}
Output :-
KHUSHI BIRLA 2
Program 3:- Write a program to swap two variables without using third
variable
#include<iostream>
int main()
{int a=10,b=20;
cout<<"the value of 1st variable is: "<<a<<"\n";
cout<<"the value of 2nd variable is: "<<b<<"\n";
a=a*b;
b=a/b;
a=a/b;
cout<<"the values after swaping are: "<<a<<" & "<<b<<"\n";
return 0;
}
Output:-
KHUSHI BIRLA 3
Program 4:-Write a program to calculate the area and perimeter of

rectangle.
#include<iostream>
class A
{public:
int l=2,b=2;
void show()
{cout<<"The area is: "<<l*b<<"\n";
cout<<"The perimeter is: "<<2*l+2*b<<"\n";
}
};
int main()
{A ob;
ob.show();
return 0;
}
Output:-
Program 5:- Write a program to show exception handling.

KHUSHI BIRLA 4
#include<iostream>
int main()
{int n,d,div;
cout<<"enter the value of denominator and numerator: "<<"\n";
cin>>n>>d;
try{
if(d==0)
{throw d;
}
div=n/d;
}
catch(int ex)
{cout<<"exception has occured"<<ex;
}
cout<<"the result is: "<<div;
return 0;
}
Output :-
KHUSHI BIRLA 5
Program 6:- Write a program to implement function overloading

#include<iostream>
class first
{
public:
int add(int x , int y)
{
return x+y;
}
int add(int x, int y, int z)
{
return x+y+z;
}
};
int main()
{
first f1;
cout<<"1st answer is: "<<f1.add(10, 20)<<endl;
cout<<"2nd answer is: "<<f1.add(10, 20,30)<<endl;
return 0;
}
Output:-
KHUSHI BIRLA 6
Program 7:- Write a program to implement function overriding.

#include<iostream>
class A
{public:
void show()
{cout<<"eat"<<"\n";
}
};
class B:public A
{public:
void show()
{cout<<"sleep"<<"\n";
}
};
int main()
{B ob1;
ob1.show();
A ob2;
ob2.show();
return 0;
}
Output:-
KHUSHI BIRLA 7
Program 8:- Write a program to implement parameterized constructor
#include<iostream>
class A
{public:
int a,b;
A(int x,int y)
{b=y;
a=x;
}
void print()
{cout<<"the value of a is"<<a<<"\n";
cout<<"the value of b is"<<b;
}
};
int main()
{A ob(2,3);
ob.print();
return 0;
}
Output:-
KHUSHI BIRLA 8
Program to show single inheritance

#include<iostream>
class A
{int a=4;
int b=4;
public:
void display()
{cout<<”the number a is”<<a;
cout<<”the number b is”<<b;}
};
class B:public A
{public:
void print()
{
Cout<<”the sum is”<<a+b;
}
};
int main()
{B ob1;
KHUSHI BIRLA 9
ob1.print();
return 0;
}
Output
Program to show multilevel inheritance

#include<iostream>
class A
{public:
void display()
{cout<<"eat"<<"\n";
}
};
class B:public A
1
KHUSHI BIRLA
0
{public:
void print()
{
cout<<"drink\n";}
};
class C:public B
{public:
void lot()
{cout<<"sleep\n";
}
};
int main()
{C ob1;
ob1.display();
ob1.print();
ob1.lot();
return 0;
}
Output
1
KHUSHI BIRLA
1
Program to create class and object

#include<iostream>
class A
{public:
int a=9;
void show()
{cout<<"the square is"<<a*a;
}
};
int main()
{A ob;
ob.show();
return 0;
1
KHUSHI BIRLA
2
Output
Program to implement encapsulation
Output
Program to show abstract class and pure

virtual function
#include<iostream>
1
KHUSHI BIRLA
3

class A
{public:
virtual void print()=0;
};
class B:public A
{public:
void print()
{cout<<"drink\n"<<"\n";
}
void display()
{cout<<"sleep\n"<<"\n";
}};
int main()
{B ob;
ob.display();
ob.print();
return 0;
}
Output
1
KHUSHI BIRLA
4
1
KHUSHI BIRLA
5
Program to merge two arrays

#include <iostream>
#define SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
void mergeSortedArrays(int *arr1, int n1, int *arr2, int n2, int
*result){
int i, j, k;
i = 0;
j = 0;
k = 0;
while (i < n1 && j < n2) {
if (arr1[i] < arr2[j]) {
result[k] = arr1[i];
++k;
++i;
} else {
result[k] = arr2[j];
++k;
++j;
}
}
while (i < n1) {
1
KHUSHI BIRLA
6
result[k] = arr1[i];
++k;
++i;
}
while (j < n2) {
result[k] = arr2[j];
++k;
++j;
}
}
void dispalyArray(int *arr, int n){
for (int i = 0; i < n; ++i) {
cout << arr[i] << " ";
}
cout << endl;
}
int main(){
int arr1[] = {10, 15, 17, 20};
int arr2[] = {5, 9, 7, 13, 19};
int result[SIZE(arr1) + SIZE(arr2)];
cout << "First sorted array:" << endl;
dispalyArray(arr1, SIZE(arr1));
1
KHUSHI BIRLA
7
cout << "Second sorted array:" << endl;

dispalyArray(arr2, SIZE(arr2));
mergeSortedArrays(arr1, SIZE(arr1), arr2, SIZE(arr2),
result);
cout << "Final sorted array:" << endl;
dispalyArray(result, SIZE(result));
return 0;
}
Output
1
KHUSHI BIRLA
8
Program to add two square matrix

#include<iostream>
int main()
{int i, j, rows, columns, sum;
cout << "\nPlease Enter the Matrix rows and Columns = ";
cin >> i >> j;
int sumRCArray[i][j];
cout << "\nPlease Enter the Matrix Items = ";
for(rows = 0; rows < i; rows++) {
for(columns = 0; columns < i; columns++) {
cin >> sumRCArray[rows][columns];
}
}
for(rows = 0; rows < i; rows++)
{sum = 0;
for(columns = 0; columns < j; columns++)
{sum = sum + sumRCArray[rows][columns];}
cout << "\nThe Sum of Items in " << rows + 1<< " Row of
a Matrix = " << sum ;
}
for(rows = 0; rows < i; rows++)
{sum = 0;
for(columns = 0; columns < j; columns++)
1
KHUSHI BIRLA
9
{sum = sum + sumRCArray[columns][rows];}

cout << "\nThe Sum of Items in Column of a Matrix = "
<< sum ;}
return 0;
}
Output
Program to show global and local

variable
#include<iostream>
int a=2;//global variable
int main()
{int b=2;//local variable
cout<<"the sum is"<<a+b<<"\n";
2
KHUSHI BIRLA
0
return 0;
}
Output
Program to show multiple inheritance

#include<iostream>
class A
{public:
void show()
{cout<<"get"<<"\n";
}
};
class B:public A
{public:
void display()
{cout<<"set"<<"\n";
}};
2
KHUSHI BIRLA
1
class C:public A
{public:
void print()
{cout<<"go"<<"\n";
}
};
int main()
{C ob;
ob.print();
ob.show();
return 0;
}
Output
Program to show hierarchical

#include<iostream>
class A
2
KHUSHI BIRLA
2
{public:
void show()
{cout<<"get"<<"\n";
}
};
class B
{public:
void display()
{cout<<"set"<<"\n";
}
};
class C:public A,public B
{public:
void print()
{cout<<"go";
}
};
int main()
{C ob;
ob.display();
ob.print();
2
KHUSHI BIRLA
3
ob.show();
return 0;
}
Output
Program to show constructor

overloading
#include <iostream>
class construct
{public:
float area;
construct()
{area = 0;}
construct(int a, int b)
{area = a * b;}
void disp()
2
KHUSHI BIRLA
4
{cout<< area<< endl;}

};
int main()
{construct o;
construct o2( 10, 20);
o.disp();
o2.disp();
return 1;}
output
Program to implement call by reference
Output
2
KHUSHI BIRLA
5
Program to implement call by value

#include <iostream>
void change(int data);
int main()
{ int data = 3;
change(data);
cout << "Value of the data is: " << data<< endl;
return 0;
}
void change(int data)
{
data = 5; }
output
2
KHUSHI BIRLA
6
Program to implement operator

overloading
#include <iostream>
class Count {
private:
int value;
public:
Count() : value(5) {}
void operator ++ () {
++value;
}
void display()
{cout << "Count: " << value << endl;
}
};
int main()
{ Count count1;
++count1;
2
KHUSHI BIRLA
7
count1.display();
return 0;
}
Output
Program for dynamic memory

allocation using new and delete
#include <iostream>
int main ()
{int* p = NULL;
p = new(nothrow) int;
if (!p)
cout << "allocation of memory failed\n";
else
{*p = 29;
cout << "Value of p: " << *p << endl;
}
2
KHUSHI BIRLA
8
float *r = new float(75.25);

cout << "Value of r: " << *r << endl;
int n = 5;
int *q = new(nothrow) int[n];
if (!q)
cout << "allocation of memory failed\n";
else
{for (int i = 0; i < n; i++)
q[i] = i+1;
cout << "Value store in block of memory: ";
for (int i = 0; i < n; i++)
cout << q[i] << " ";}
delete p;
delete r;
delete[] q;
return 0;
}
Output
2
KHUSHI BIRLA
9
Program to show pure virtual function

and abstract class
#include <iostream>
class Shape {
protected:
float dimension
public:
void getDimension() {
cin >> dimension;
}
virtual float calculateArea() = 0;
};
class Square : public Shape {
public:
float calculateArea() {
return dimension * dimension;
}
};
class Circle : public Shape {
public:
float calculateArea() {
return 3.14 * dimension * dimension;
}
3
KHUSHI BIRLA
0
};
int main() {
Square square;
Circle circle;
cout << "Enter the length of the square: ";
square.getDimension();
cout << "Area of square: " << square.calculateArea() << endl;
cout << "\nEnter radius of the circle: ";
circle.getDimension();
cout << "Area of circle: " << circle.calculateArea() << endl;
return 0;
}
Output
Program for friend function

#include <iostream>
class Distance {
3
KHUSHI BIRLA
1
private:
int meter;
friend int addFive(Distance);
public:
Distance() : meter(0) {}
};
int addFive(Distance d) {
d.meter += 5;
return d.meter;
}
int main() {
Distance D;
cout << "Distance: " << addFive(D);
return 0;
}
Output
Program to implement aggregation

#include <iostream>
3
KHUSHI BIRLA
2
class Address {
public:
string addressLine, city, state;
Address(string addressLine, string city, string state)
{
this->addressLine = addressLine;
this->city = city;
this->state = state;
}
};
class Employee
{
private:
Address* address;
public:
int id;
string name;
Employee(int id, string name, Address* address)
{
this->id = id;
this->name = name;
this->address = address;
}
void display()
3
KHUSHI BIRLA
3
{
cout<<id <<" "<<name<< " "<<
address->addressLine<< " "<< address->city<< " "<<address-
>state<<endl;
} }; int main(void) {
Address a1= Address("C-146, Sec-15","Noida","UP");
Employee e1 = Employee(101,"Nakul",&a1);
e1.display();
return 0;
}
Output
Program to show exception handling

using multiple catch block
#include<iostream>
#include<conio.h>
void test(int x) {
try {
if (x > 0)
3
KHUSHI BIRLA
4
throw x;
else
throw 'x';
} catch (int x) {
cout << "Catch a integer and that integer is:" << x;
} catch (char x) {
cout << "Catch a character and that character is:" << x;
}
}
int main() {
cout << "Testing multiple catches\n:";
test(10);
test(0);
return 0;
}
Output
Program to implement scope resolution

operator
#include<iostream>
3
KHUSHI BIRLA
5

int x;
int main()
{int x = 10;
cout << "Value of global x is " << ::x;
cout << "\nValue of local x is " << x;
return 0;
}
Output
Program to implement abstraction

#include <iostream>
class implementAbstraction
{private:
int a, b;
public:
void set(int x, int y)
{a = x;
b = y;
3
KHUSHI BIRLA
6
void display()
{cout<<"a = " <<a << endl;
cout<<"b = " << b << endl;
}};
int main()
{implementAbstraction obj;
obj.set(10, 20);
obj.display();
return 0;
}
Output
Program to implement polymorphism

#include <iostream>
void test(int i) {
3
KHUSHI BIRLA
7
cout << " The int is " << i << endl;

}
void test(double f) {
cout << " The float is " << f << endl;
}
void test(char const *ch) {
cout << " The char* is " << ch << endl;
}
int main() {
test(5);
test(5.5);
test("five");
return 0;
}
Output
Program to call member function using

object of the class
#include<iostream>
3
KHUSHI BIRLA
8

class A
{public:
void show()
{cout<<"show"<<"\n";
}
};
int main()
{A ob;
ob.show();
return 0;
}
Output
3
KHUSHI BIRLA
9

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Object Oriented Programming Using C &C++ Paper code: BCA301 Date: …./….

Program 2:- Write a program to display number from 1 to 10 using loop.

Program 4:-Write a program to calculate the area and perimeter of

Program 5:- Write a program to show exception handling.

Program 6:- Write a program to implement function overloading

Program 7:- Write a program to implement function overriding.

Program 8:- Write a program to implement parameterized constructor

Program to show single inheritance

Program to show multilevel inheritance

Program to create class and object

Program to implement encapsulation

Program to show abstract class and pure

using namespace std;

Program to merge two arrays

cout << "Second sorted array:" << endl;

Program to add two square matrix

{sum = sum + sumRCArray[columns][rows];}

Program to show global and local

Program to show multiple inheritance

Program to show hierarchical

Program to show constructor

{cout<< area<< endl;}

Program to implement call by reference

Program to implement call by value

Program to implement operator

Program for dynamic memory

float *r = new float(75.25);

Program to show pure virtual function

Program for friend function

Program to implement aggregation

Program to show exception handling

Program to implement scope resolution

using namespace std;

Program to implement abstraction

Program to implement polymorphism

cout << " The int is " << i << endl;

Program to call member function using

using namespace std;

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