Exam 4: C++ Programming and Concepts: Inheritance, Data Types, Objects, and Output Prediction

#include<iostream> using namespace std;class X{public:int x;};int main(){X a = {10};X b = a;cout <<a.x <<" " <<b.x; return 0;}

Which of the following is true?

Which of the following approach is adopted in C++?

How many objects can be created from an abstract class?

C++ was originally developed by ….......

Which of the following is true about new when compared with malloc. 1) new is an operator, malloc is a function 2) new calls constructor, malloc doesn't 3) new returns appropriate pointer, malloc returns void * and pointer needs to typecast to appropriate type.

Is it fine to call delete twice for a pointer?#include<iostream> using namespace std;int main(){int *ptr = new int; delete ptr;delete ptr; return 0;}

If particular software can be used in some other application than the one for which it is created then it reveals ….........

The main intention of using inheritance is ….........

Which of the followings is/are automatically added to every class, if we do not write our own.

Which of the following data type does not return anything?

Which of the following statements is correct for a static member function? 1) It can access only other static members of its class. 2) It can be called using the class name, instead of objects

Which of the following interface determines how your program will be used by other program?

What happens when delete is used for a NULL pointer? int *ptr = NULL; delete ptr;

Predict the output of following C++ program#include<iostream> using namespace std;class Empty {}; int main(){cout <<sizeof(Empty); return 0;}

Which feature of C++ contain the concept of super class and subclass?

What is the difference between struct and class in C++?

Which of the following is true about the following program#include <iostream> class Test{public:int i;void get();};void Test::get(){std::cout <<"Enter the value of i: "; std::cin >>i;}Test t; // Global object int main(){Test t; // local object t.get();std::cout <<"value of i in local t: "<<t.i<<'\n';::t.get();std::cout <<"value of i in global t: "<<::t.i<<'\n'; return 0;}

Output of following program?#include<iostream> using namespace std; class Point {Point() { cout <<"Constructor called"; }};int main(){Point t1; return 0;}

class Test { int x;};int main(){Test t; cout <<t.x; return 0;}