题解 | #求绝对值，平方根，对数，正弦值#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        double num = scanner.nextDouble();

        //write your code here......
        System.out.println(Math.abs(num));  // 绝对值
        System.out.println(Math.sqrt(num)); // 平方根
        System.out.println(Math.log(num));  // 对  数
        System.out.println(Math.sin(num));  // 正弦值
    }
}