蓝桥杯软件大赛练习系统——基础练习 十进制转十六进制

import java.util.Scanner;


public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner cin = new Scanner(System.in);
		
		while(cin.hasNext()) {
			long num = cin.nextLong();
			String hex_num = Long.toHexString(num);
			hex_num = hex_num.toUpperCase();
			System.out.println(hex_num);
		}
		
		cin.close();
		
	}

}