public static void test3() {
Scanner input = new Scanner(System.in);
System.out.println("请输入一串整型数:");
int num = input.nextInt();
System.out.println("你输入的整型数是:" + num);
System.out.println("请输入一串长整型数:");
long numl = input.nextLong();
System.out.println("你输入的长整型数是:" + numl);
input.close();
}