WAP to calculate Factorial of a number (i) using recursion, (ii) using iteration

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#include<iostream.h>

#include<conio.h>

class factorial

{

int f;

public:

int faci(int f);

int facr(int f);

};

int factorial::faci(int f)

{   int pro=1;

                while(f>0)

                {

                pro=pro*f;

                f=f--;

                }

return(pro);

}

int factorial::facr(int f1)

{

                if(f1<=1)

                return (1);

                else

                return(f1*(facr(f1-1)));

}

void main()

{

clrscr();

factorial obj;

int n1,n2;

cout<<"enter the number whose factorial is to be found by iterative method"<<endl;

cin>>n1;

   cout<<"the answer is "<<obj.faci(n1)<<endl;

cout<<"enter the number whose factorial is to be found by recursive method"<<endl;

cin>>n2;

cout<<"the answer is "<<obj.facr(n2)<<endl;

getch();

}

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Output:-