text: Hyperfactorial of a number | C # program to find the hyperfactorial of a number ; function to calculate the value of hyperfactorial ; initialise the val to 1 ; returns the hyperfactorial of a number ; Driver code
code: using System ; class GFG { static long boost_hyperfactorial ( long num ) { long val = 1 ; for ( long i = 1 ; i <= num ; i ++ ) { val = val * ( long ) Math . Pow ( i , i ) ; } return val ; } public static void Main ( ) { int num = 5 ; Console . WriteLine ( boost_hyperfactorial ( num ) ) ; } }