Factorial a Number Using Pointers in C++

 A program to ask the user a number and then the program will compute the factorial number using pointers in C++ programming language.

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Program Listing

#include <iostream>

using namespace std;

int Solve_Factorial(int n,  long int *factorial){

        int i;

       *factorial =1;

       for(i=1;i<=n;i++)

       *factorial=*factorial*i;

       }

       

int main(){

         long int factorial;

         int num_given=0;

        

         cout <<"\n\n";

         cout <<"\tFactorial a Number Using Pointers in C++";

         cout <<"\n\n";

         cout <<"\tGive a Number : ";

         cin >> num_given;

         Solve_Factorial(num_given, &factorial); 

cout <<"\n\n";    

         cout <<"\tFactorial of " << num_given 

<< " is " << factorial << ".";

         cout <<"\n\n";

         cout << "\tEnd of Program";

         cout <<"\n";

        }