You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
971 B
C++
47 lines
971 B
C++
/*
|
|
* C++ Program to Find Factorial of a Number using Recursion
|
|
*/
|
|
#include <cstring>
|
|
#include <iostream>
|
|
#include <cstdlib>
|
|
#define ll long long
|
|
using namespace std;
|
|
/*
|
|
* Find Factorial of a Number using Recursion
|
|
*/
|
|
ll fact_recur(int n)
|
|
{
|
|
if (n == 0 || n == 1)
|
|
return 1;
|
|
else
|
|
return n * fact_recur(n - 1);
|
|
}
|
|
/*
|
|
* Main
|
|
*/
|
|
int main()
|
|
{
|
|
int n;
|
|
while (1)
|
|
{
|
|
cout<<"Enter interger to compute factorial(0 to exit): ";
|
|
cin>>n;
|
|
if (n == 0)
|
|
break;
|
|
cout<<fact_recur(n)<<endl;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
Enter interger to compute factorial(0 to exit): 10
|
|
3628800
|
|
Enter interger to compute factorial(0 to exit): 20
|
|
2432902008176640000
|
|
Enter interger to compute factorial(0 to exit): 15
|
|
1307674368000
|
|
Enter interger to compute factorial(0 to exit): 0
|
|
|
|
------------------
|
|
(program exited with code: 1)
|
|
Press return to continue
|