【单选题】class Animal { string name; public: Animal(string name="na"):name(name) { } }; class Cat:public Animal { int runSpeed; public: Cat(string na,int speed=0); }; 使用初始化表的方式实现Cat的构造函数的写法是______。
A.
Cat(string na,int speed=0):Animal(na),runSpeed(speed){}
B.
Cat(string na,int speed):Animal(na),runSpeed(speed){}
C.
Cat(string na,int speed): { Animal(na),runSpeed(speed);}
D.
Cat(string na,int speed){name=na;runSpeed=speed;}
【简答题】class Person{ String name,department; int age; public Person(Stringn){name=n;} public Person(String n, int a){name=n;age=a;} publicPerson(String n,String d,int a){ doing the same as two argumentsversi...
【单选题】Which of the following is correct way to refer to a string value named text_name in String.xml?
【简答题】以下程序有何错误? abstract class Name{ private String name ; public abstract boolean isSupidName(String name) {} }