COPY CONSTRUCTOR

AIM:
         To implement a C++ program to calculate factorial of a given number using copy constructor.

ALGORITHM:

Step 1:  Include the header files

Step 2:  Declare the class name as copy with data members and member functions.

Step 3:  The constructor copy () with argument to assign the value.

Step 4:  To cal the function calculate () do the following steps.

Step 5:   for i=1 to var do

Step 6:   Calculate fact*i to assign to fact.

Step 7:   Increment the value as 1.

Step 8:   Return the value fact.

Step 9:   Print the result.

.

PROGRAM:

#include<iostream.h>

#include<conio.h>

class copy

{

              int var,fact;

              public:

                copy(int temp)

                {

                 var = temp;

                }

                double calculate()

                {

                            fact=1;

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

                            {

                            fact = fact * i;

                            }

                            return fact;                           

                }

};

void main()

{

    clrscr();

    int n;

    cout<<"\n\tEnter the Number : ";

    cin>>n;

    copy obj(n);

    copy cpy=obj;

    cout<<"\n\t"<<n<<" Factorial is:"<<obj.calculate();

    cout<<"\n\t"<<n<<" Factorial is:"<<cpy.calculate();

    getch();

}  

 SAMPLE OUTPUT:

Enter the Number: 5

Factorial is: 120

Factorial is: 120