类的构造器
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using System;
class A //所有类都继承自: Object
...{
public A()//继承自基类的构函数:base()
...{
Console.WriteLine("轻轻的我来了!");
}
}
class Test
...{
static void Main()
...{
A a = new A();//A()是调用构造器
}
}
class A //所有类都继承自: Object
...{
public A()//继承自基类的构函数:base()
...{
Console.WriteLine("轻轻的我来了!");
}
}
class Test
...{
static void Main()
...{
A a = new A();//A()是调用构造器
}
}
类实例化时为类的 成员变量赋初值
using System;
class A //所有类都继承自: Object
...{
public int i;
public string s;
public A()//继承自基类的构函数:base()
...{
Console.WriteLine("构造函数的值");
}
}
class Test
...{
static void Main()
...{
A a = new A();
Console.WriteLine("i=" + a.i);
Console.WriteLine("i=" + a.s);
}
}
class A //所有类都继承自: Object
...{
public int i;
public string s;
public A()//继承自基类的构函数:base()
...{
Console.WriteLine("构造函数的值");
}
}
class Test
...{
static void Main()
...{
A a = new A();
Console.WriteLine("i=" + a.i);
Console.WriteLine("i=" + a.s);
}
}
构造器综合实例
using System;
class A //所有类都继承自: Object
...{
public int i;
public string s;
public A()//继承自基类的构函数:base()
...{
i = 100;
s = "书本";
}
public A(int a):this()
...{
i = a;
}
public A(string b): this()
...{
s = b;
}
public A(int a, string b) : this()
...{
i=a;
s = b;
}
}
class Test
...{
static void Main()
...{
A a = new A();
Console.WriteLine("第一个构造器");
Console.WriteLine("i=" + a.i);
Console.WriteLine("s=" + a.s);
A a1 = new A(11111);
Console.WriteLine("第二个构造器");
Console.WriteLine("i=" + a1.i);
Console.WriteLine("s=" + a1.s);
A a2 = new A("我我我我我");
Console.WriteLine("第三个构造器");
Console.WriteLine("i=" + a2.i);
Console.WriteLine("s=" + a2.s);
A a3 = new A(11111,"我我我我我");
Console.WriteLine("第四个构造器");
Console.WriteLine("i=" + a3.i);
Console.WriteLine("s=" + a3.s);
}
}
class A //所有类都继承自: Object
...{
public int i;
public string s;
public A()//继承自基类的构函数:base()
...{
i = 100;
s = "书本";
}
public A(int a):this()
...{
i = a;
}
public A(string b): this()
...{
s = b;
}
public A(int a, string b) : this()
...{
i=a;
s = b;
}
}
class Test
...{
static void Main()
...{
A a = new A();
Console.WriteLine("第一个构造器");
Console.WriteLine("i=" + a.i);
Console.WriteLine("s=" + a.s);
A a1 = new A(11111);
Console.WriteLine("第二个构造器");
Console.WriteLine("i=" + a1.i);
Console.WriteLine("s=" + a1.s);
A a2 = new A("我我我我我");
Console.WriteLine("第三个构造器");
Console.WriteLine("i=" + a2.i);
Console.WriteLine("s=" + a2.s);
A a3 = new A(11111,"我我我我我");
Console.WriteLine("第四个构造器");
Console.WriteLine("i=" + a3.i);
Console.WriteLine("s=" + a3.s);
}
}
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