Question

Write a program to calculate the factorial of given number.

Answer 1

#include <iostream>
using namespace std;

double calculate_factorial (double number)
{
if (number == 0) return 1.0;
return number * calculate_factorial(number-1);
}

int main()
{
double number = 8;
double factorial = calculate_factorial (number);
cout << "The factorial is " << factorial << endl;

return 0;
}