using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Student std1 = new Student();
            std1.stdno = "2013080452";
            std1.stdName = "张三";
            std1.stdSex = "男";
            std1.stdBir = new DataTime(1992, 1, 12);

            int age = std1.getAge();
            Console.WriteLine(age);

            Student std2 = new Student();
            std2.stdbir = new DataTime(1989, 5, 12);

            int age2 = std2.getAge();
            Console.WriteLine(age2);
        }
    }
}

class Student
{
    public string stdno;
    public string stdName;
    public string stdSex;
    public string stdBir;

    int getAge();
    {
        DaTatime nowTime=DaTatime.Now;
    return nowTime.Year-stdBir.Year;
    }
}