Question

kindly write it in c++ language. from dev c++ .

Write a program to find out the factorial of an integer using loop Formula to find the factorial of an integer is: n*(n-1)*(n-2)*......... 1.

Answer 1

PROGRAM :

type 1:

#include <iostream>
using namespace std;
unsigned int factorial(unsigned int n)
{
if (n == 0)
return 1;
return n * factorial(n - 1);
}
int main()
{
int num = (15);
cout << "Factorial of "
<< num << " is " << factorial(num) << endl;
return 0;
}

type2 :

#include <iostream>
using namespace std;
int main()
{
unsigned int n;
unsigned long long factorial = 1;

cout << "Enter a positive integer: ";
cin >> n;

for(int i = 1; i <=n; ++i)
{
factorial *= i;
}

cout << "Factorial of " << n << " = " << factorial;
return 0;
}