New and Delete Operators in C++

/*

 * C++ Program to Demonstrate using keywords new and delete

 */

#include<iostream>

using namespace std;

int main()

{

    int num;

    cout << "Enter the number    : ";

    cin >> num;

    /* Dynamically allocating value using new */

    int * val = new int(num);

    cout << "Value of variable : " << *val << endl;

    /* Deleting allocated storage using delete */

    delete val;

    /* Setting 'val' to NULL is advised to avoid complications */

    val = NULL;

    /* Using deleted pointer causes segmentation fault */

    cout << "Value of variable : " << *val << endl;

}