Answer to Question #350967 in C++ for BScInf

Question

Write C++ statements to do the following: (7)

(i) Define a pointer type int_ptr for pointer variables that contain pointers to int variables. (ii) Declare p2 to be a pointer to an int.

(iii) Obtain an integer value nrElements from the user indicating the number of elements to allocate.

(iv) Dynamically allocate an array of nrElements integers and store its address in p2.

(v) Declare an int array a with 500 elements.

(vi) Assume p2 has been initialized and copy the elements of p2 one by one to the corresponding elements in a.

(vii) Free the memory allocated to the variable that p2 is pointing to.

Answer 1

#include <iostream>

using namespace std;

int main()
{
	//1)Define a pointer type int_ptr for pointer variables that contain pointers to int variables.
	int **int_ptr;
	//2)Declare p2 to be a pointer to an int
	int* p2;
	//3)Obtain an integer value nrElements from the user indicating the number of elements to allocate.
	int nrElements;
	cout << "Please, emter the number of elements to allocate: ";
	cin>> nrElements;
	//4)Dynamically allocate an array of nrElements integers and store its address in p2.
	p2 = new int[nrElements];
	//5) Declare an int array a with 500 elements.
	int a[500];
	//6)Assume p2 has been initialized and copy the elements of p2 one by one to the corresponding elements in a.
	for (int i = 0; i < nrElements; i++)
	{
		a[i] = p2[i];
	}
	//7)Free the memory allocated to the variable that p2 is pointing to.
	delete p2;
	
}