Question

Write a C++ program to find factorial of a number during execution by using constructor function.

Answer 1

#include<iostreain.h>
#include<conio.h>
#class factorial 
{
       private: 
       long int fact, i,n; 
       public:
       factorial() 
       {
           i=l;
           fact=l;
       }
       void calculatefact(void); 
}; 
void factorial::calculatefact(void)
{
    cout<<"Enter number to calculate its factorial:"; 
    cin>>n;
    for(i=1;i<=n;i++) 
    {
fact=fact*i;
}
cout<<"factotial of"<<n<<" is=:" <<fact; 
}
void.main() 
{ 
    clrscr();
    factorial f; 
    f.calculatefact(); 
   getch();
}