PointersToPointers_Recursion_12.cpp

/***** ****
 * Factorial of a number 
 * ********************************/
#include<iostream>
using namespace std;
int calcFactorial(int **);
int main(){
    int range,*ptr_range,**ptriptr, temp ;
    cout << "Enter a range: ";
    cin >> range;
    cout << "Factorial upto " << range << " are: " << "\n";
     for(int i=1,j=0; i<=range+1; i++,j++){
        temp = i;
        ptr_range = &temp;
        ptriptr = &ptr_range;
        cout  <<"Factorial of "<<j <<" = " << calcFactorial(ptriptr) << endl;
    }
    
    return 0;
}
int  calcFactorial(int **n){
    if(**n==1 || **n == 0){
        return 1;
    }
     **n = **n-1;
     return **n *calcFactorial(n) ;       
}