static void Main(string[] args)
{
Speaker speaker = new Speaker();
IChineseGreeting iChineseGreeting = (IChineseGreeting)speaker;
iChineseGreeting.Greeting();
IAmericanGreeting iAmericanGreeting = (IAmericanGreeting)speaker;
iAmericanGreeting.Greeting();
Console.Read();
}
// 隐式接口实现存在的问题
static void Main(string[] args)
{
// 初始化类实例
Speaker speaker = new Speaker();
// 调用中国人打招呼方法
IChineseGreeting iChineseG = (IChineseGreeting)speaker;
iChineseG.SayHello();
// 调用美国人招呼方法
IAmericanGreeting iAmericanG = (IAmericanGreeting)speaker;
iAmericanG.SayHello();
Console.Read();
}
static void Main(string[] args)
{
/*
* 调用接口中的方法
* 前面介绍了如何继承一个接口并且实现其中的方法，
* 接下来看如何去调用接口中的方法，具体调用代码如下:
* **/
Person p1 = new Person();
Person p2 = new Person();
p1.Age = 20;
p2.Age = 30;
if (p1.CompareTo(p2) > 0)
{
Console.WriteLine("P1 greater than p2!");
}
else if (p1.CompareTo(p2) < 0)
{
Console.WriteLine("p1 less than p2!");
}
else
{
Console.WriteLine("p1 equal to p2!");
}
Greet greet = new Greet();
((IChineseGreeting)greet).sayHello();
IChineseGreeting chinese = greet;
chinese.sayHello();
IAmericanGreeting american = greet;
american.sayHello();
Console.ReadKey();
}
static void Main(string[] args)
{
//常量
const string TEST = "test";
//定义输出文本变量
string welcomeText = "welcome";
//输出文本到控制台
Console.WriteLine(welcomeText);
//结构体
Complex number1 = new Complex(1, 2);
Complex number2 = new Complex(3, 4);
//用+运算符对两个复数进行相加 如果复数类型中没有对+运算符进行重载 则不能使用+运算符来对复数类型进行相加操作
Complex sum = number1 + number2;
Console.WriteLine("first: {0}, {1}", number1.real, number1.imaginary);
Console.WriteLine("second: {0}, {1}", number2.real, number2.imaginary);
Console.WriteLine("first and second: {0}, {1}", sum.real, sum.imaginary);
//Console.Read();
Statements statements = new Statements();
statements.statementsIF();
statements.statementSWITCH();
statements.statementWHILE();
statements.statementDOWHILE();
statements.statementFOR();
statements.statementFOREACH();
Person person = new Person();
person.Print("printString");
person.Print(1);
person.Print("printSting", 1);
//索引器
person[0] = 1;
person[1] = 2;
person[3] = 3;
Console.WriteLine(person[0]);
Console.WriteLine(person[1]);
Console.WriteLine(person[2]);
//OOP
Horse horse = new Horse();
horse.Print();
Sheep sheep = new Sheep();
sheep.Voice();
horse.Voice();
horse.Eat();
((Animal)horse).Eat();
//调用接口中的方法
PersonImp p1 = new PersonImp();
p1.Age = 18;
PersonImp p2 = new PersonImp();
p2.Age = 19;
if (p1.CompareTo(p2) > 0)
{
Console.WriteLine("p1比p2大");
}
else if (p1.CompareTo(p2) < 0)
{
Console.WriteLine("p1比p2小");
}
else
{
Console.WriteLine("p1和p2一样大");
}
//隐式接口调用/显式接口调用
Speaker speaker = new Speaker();
//调用中国人打招呼方法
IChineseGreeting iChineseG = (IChineseGreeting)speaker;
iChineseG.SayHello();
//调用美国人打招呼方法
IAmericanGreeting iAmericanG = (IAmericanGreeting)speaker;
iAmericanG.SayHello();
//让控制台程序可见知道用户按下任意字符位置
Console.ReadKey();
}
static void test()
{
Person p1 = new Person();
Person p2 = new Person("I'M PANJINLIAN.");
Person p3 = Person.GetPerson();
Console.WriteLine(p1.Name);
Console.WriteLine(p2.Name);
Console.WriteLine(p3.Name);
Person p4 = new Person();
p4[0] = "hello";
p4[1] = " ";
p4[2] = "world";
Console.WriteLine(p4[0] + " " + p4[2]);
Horse hrs1 = new Horse();
hrs1.Age = 2;
Horse hrs2 = new Horse(666);
hrs2.Age = 3;
Animal hrs3 = new Horse(1);
hrs3.Voice();
Horse hrs4 = new Horse(5);
hrs4.Voice();
//Customer Interface practice.
Customer cst1 = new Customer(12);
Customer cst2 = new Customer(23);
if (cst1.CompareTo(cst2) < 0)
{
Console.WriteLine("{0}比{1}小。", cst1.Age.ToString(), cst2.Age.ToString());
}
else if (cst1.CompareTo(cst2) > 0)
{
Console.WriteLine("{0}比{1}大。", cst1.Age.ToString(), cst2.Age.ToString());
}
else
{
Console.WriteLine("一样大。");
}
//隐式接口不管哪个接口实现的方法都是相同的，但并不是我们期望的结果
//显式
Speaker spk = new Speaker();
IChineseGreeting icg = (IChineseGreeting)spk;
icg.SayHello();
IAmericaGreeting iag = (IAmericaGreeting)spk;
iag.SayHello();
Console.ReadKey();
}