Chapter 8. Object-oriented (polymorphic-virtual method)

namespacepolymorphic { Public classPerson {Private string_name;  Public stringName {Get{return_name;} Set{_name =value;} }         PublicPerson (stringname) {             This. Name =name; }        //virtual Method         Public Virtual voidSayHello () {Console.WriteLine ("I am a human being"); }    }     Public classChinese:person { PublicChinese (stringname):Base(name) {}//method Overrides         Public Override voidSayHello () {Console.WriteLine ("I am Chinese, my name is {0}", This.        Name); }    }     Public classJapanese:person { PublicJapanese (stringname):Base(name) {}//method Overrides         Public Override voidSayHello () {Console.WriteLine ("I'm Japanese, my name is {0}", This.        Name); }    }     Public classKorean:person { PublicKorean (stringname):Base(name) {}//method Overrides         Public Override voidSayHello () {Console.WriteLine ("I'm Korean, my name is {0} .", This.        Name); }    }     Public classAmerican:person { PublicAmerican (stringname):Base(name) {}//method Overrides         Public Override voidSayHello () {Console.WriteLine ("I'm an American, my name is {0}", This.        Name); }    }     Public classEnglishman:person { PublicEnglishman (stringname):Base(name) {}//method Overrides         Public Override voidSayHello () {Console.WriteLine ("I'm English, my name is {0}", This.        Name); }    }}

classProgram {Static voidMain (string[] args) {Chinese cn1=NewChinese ("Chengjiayang"); Chinese cn2=NewChinese ("Wang Xudong"); Japanese J1=NewJapanese ("under the tree, June"); Japanese J2=NewJapanese ("Well Edge Sub"); Korean K1=NewKorean ("Ronaphoom"); Korean K2=NewKorean ("Seok"); American A1=NewAmerican ("Adele"); American A2=NewAmerican ("Little Britney Spears ."); Person[] P={cn1, cn2, J1, J2, K1, K2, A1 , A2,NewEnglishman ("Green"),NewEnglishman ("Maria") };  for(inti =0; i < p.length; i++) {P[i].            SayHello ();    } console.readline (); }

Chapter 8. Object-oriented (polymorphic-virtual method)