4) Which of the following is/are valid ways to allocate memory for an integer by dynamic memory allocation in CPP? a. int *p = new int(100); b. int *p; p = new int; *p = 100; c. int *p = NULL; p = new int; *p=100; d. Only 1,2 e. All of these

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter12: Points, Classes, Virtual Functions And Abstract Classes
Section: Chapter Questions
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4) Which of the following is/are valid ways to allocate memory for an integer by dynamic memory allocation in CPP?


a. int *p = new int(100);
b. int *p; p = new int; *p = 100;
c. int *p = NULL; p = new int; *p=100;
d. Only 1,2
e. All of these


5) Choose the correct option?
#include<iostream>
using namespace std;

class Base {};

class Derived: public Base {};

int main()
{
Base *bp = new Derived;
Derived *dp = new Base;
}


a. No Compiler Error
b.Compiler Error in line “Base *bp = new Derived;”
c. Compiler Error in line ” Derived *dp = new Base;”
d. Runtime Error

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