Driver method
int main ( ) { int num = 5 ; cout << " Factorial ▁ of ▁ " << num << " ▁ using ▁ Recursion ▁ is : ▁ " << factorialUsingRecursion ( 5 ) << endl ; cout << " Factorial ▁ of ▁ " << num << " ▁ using ▁ Iteration ▁ is : ▁ " << factorialUsingIteration ( 5 ) ; return 0 ; }