Factorial of a Number using Recursion in C++

import java.util.*;
import java.io.*;
import java.lang.*;
public class Main
{ static int fact(int n){
if(n==0){
return 1;
}
return n*fact(n-1);
}
public static void main(String[] args) {
int x=fact(3);
System.out.println(x);

}
}