4. Given, an abstract class as the following: abstract class Test{ abstract void add(); } Which one of the following statement is valid? a. Test to =new Test() b. new Test(); c. Test [Jarray=new Test[5]; d. Test to =new Test(10);

4. Given, an abstract class as the following: abstract class Test{ abstract void add(); } Which one of the following statement is valid? a. Test to =new Test() b. new Test(); c. Test [Jarray=new Test[5]; d. Test to =new Test(10);

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Consider the following class definition: (8) class base { public: void setXYZ(int a, int b, int c) ; voidsetX ( int a ) ; int getX ()const{returnx; } void setY ( int b ); intgetY()const{returny; } int mystryNum () {return ( x &*#x00A0;y - z &*#x00A0;z) ;} void print () const; base () } base(int a, int b, int c); protected: void setz ( int c) { z= c; } void secret(); int z= 0; private: int x= 0; int y = 0; }; a. Which member functions of the class base are protected? b. Which member functions of the class base are inline? c. Write the statements that derive the class myclass from class base as a public inheritance. d. Determine which members of class base are private, protected, and public in class myclass.
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