类的声明与实例化

public class student//创建一个学生类
{   //数据成员列表
public string name;

private uint age;
protected char sex;
internal string telephone;
public string grade;
//方法成员列表
public void say()
{
Console.WriteLine("Hello， 淄博汉企");

}
public double Sum(double x, double y)
{
return x + y;
}
}

static void Main(string[] args)
{//类的实例化
student stu=new student();
stu.name = "提莫";
stu.grade = "淄博汉企";
stu.telephone = "1234567";
//其他类型的成员此处不可用
Console.WriteLine(stu.name+stu.grade+stu.telephone);
//方法调用
stu.say();
Console.Write(stu.Sum(2, 3));
Console.ReadLine();

}