import java.util.*; import java.math.BigInteger; public class Main { public static void main(String[] args) { Scanner cin = new Scanner(System.in); int k=Integer.parseInt(cin.nextLine()); while(k-->0) { int n=I
However, there is a 'trick' to get around this: setting the value of the zero-factorial to a number by definition. And, hence, we arrive at the convention: 0! = 1. A small disclaimer is needed here since, in maths, things are never as easy as "choose a number and roll with it...
5. What is the factorial of a negative number? A. Always 0 B. Always Undefined C. Positive Integer D. Negative Integer Show Answer Print Page Submit Review AdvertisementsTOP TUTORIALS Python Tutorial Java Tutorial C++ Tutorial C Programming Tutorial C# Tutorial PHP Tutorial R Tutorial HTML...
#include<iostream>// Including input-output stream header fileusing namespace std;// Using the standard namespace// Function to calculate factorial recursivelylonglongfactorial(intnum){if(num==0){// If the number is 0return1;// Return 1 because 0! is 1 by definition}else{// Recursive cal...
We've actually strayed a bit away from the original definition here - we're counting from 1 to n, while the definition of factorial was from the given number down to 1. When you put it down on paper, though, mathematically: 1∗2∗3∗4...∗n=n∗(n−1)∗(n−2)∗...