【Java例题】1.1计算n的阶乘

package study;
import java.util.*;
import java.math.*;

public class myClass {
    public static void main(String[] args){
        System.out.println("请输入x的值");
        Scanner in=new Scanner(System.in);
        int x=in.nextInt();
        long ans = 1;
        for(int i=1;i<=x;i++){
            ans=ans*i;
        }
        System.out.println("x的阶乘是"+ans);
    }
}