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有如下程序:includeusing namespace std;class Publication{//出版物类char name[30]

有如下程序: #include<iostream> using namespace std; class Publication{//出版物类 char name[30]; public: Publication(char*name="未知名称"){strcpy(this->name,name);} const char*getName( )const{return name;} //常数据成员 virtual const char*getType( )const{return"未知类型";}//虚常数据成员 }; class Book:public Publication{ //书类 public: Book(char*name):Publication(name){ } virtual const char*getType( )const{return"书";} //虚常数据成员 }; void showPublication(Publication &p){cout<<p.getType( )<<":"<<P.getName( )<<endl;} int main( ){ Book book("精彩人生"); showPublication(book); return 0; } 程序的输出结果是

A.未知类型:未知名称

B.未知类型:精彩人生

C.书:未知名称

D.书:精彩人生


参考答案

更多 “ 有如下程序:includeusing namespace std;class Publication{//出版物类char name[30] 有如下程序: #include<iostream> using namespace std; class Publication{//出版物类 char name[30]; public: Publication(char*name="未知名称"){strcpy(this->name,name);} const char*getName( )const{return name;} //常数据成员 virtual const char*getType( )const{return"未知类型";}//虚常数据成员 }; class Book:public Publication{ //书类 public: Book(char*name):Publication(name){ } virtual const char*getType( )const{return"书";} //虚常数据成员 }; void showPublication(Publication p){cout<<p.getType( )<<":"<<P.getName( )<<endl;} int main( ){ Book book("精彩人生"); showPublication(book); return 0; } 程序的输出结果是A.未知类型:未知名称B.未知类型:精彩人生C.书:未知名称D.书:精彩人生 ” 相关考题
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考题 有如下程序: #includeiostream usingnamespacestd; classPublication{//出版物类 charname[30]; public: Publication(char*name=”未知名称”){ ~strcpy(this一name,name); } constchar*getName( )const{returnname;} virtualconstchar*getType( )const{return”未知类型”;} }; classBook:publicPublication{//书类public: Book(char*name):Publication(name){} virtualconstchar*getType( )const{return"书";} }; voidshowPublication(Publicationp){ coutp.getType( )":"p.getName( ) endl; } intmain( ){ Bookbook(”精彩人生”); showPublication(book); return0; } 运行时的输出结果是( )。A.未知类型:未知名称B.未知类型:精彩人生C.书:未知名称D.书:精彩人生