构造函数是对数据进行初始化的
class Customer
{
public string name;
public string address;
private int age;
public string createTime;
public Customer()
{
Console.WriteLine("这是无参构造函数");
}
Customer c1=new.Customer()
Customer c2=new.Customer()
Customer c3=new.Customer()
F5运行之后就是
这是构造函数
这是构造函数
这是构造函数
public Customer (string a1,string a2,int a3,int a4)
{
name=a1;
address=a2;
age=a3;
createTime=a4;
}