Basic C++ Pointer Theory

 int main()
{
    int demonstrate = 5; //declares an int
    int *pPointer = &demonstrate; //declares a pointer to an int and assigns the address of demonstrate to a pointer
    cout << demonstrate << endl; //outputs the value of demonstrate
    cout << &demonstrate << endl; //outputs the value of demonstrate
    cout << *pPointer << endl; //outputs whatever’s stored at the pointers address
    return 0;
}

 int main()
{
    int demonstrate = 5; //declares an int
    int *pPointer = &demonstrate; //declares a pointer to an int and assigns the address of demonstrate to a pointer
    cout << demonstrate << endl; //outputs the value of demonstrate before manipulation
    *pPointer = demonstrate; //reassigns the pointer to the value itself
    *pPointer = 6; //modifies the value stored in demonstrate
    cout << demonstrate << endl; //outputs the modified value
    return 0;
}

 int main()
{
    int *pHeap = new int; //declares an int on the heap
     if (pHeap == NULL) //error checking
    {
        cout << "b0rked" << endl;
        return 0;
    }
     *pHeap = 7; //gives the pointer a value
    cout << *pHeap << endl;
    delete pHeap; //deletes the value held the pointer can now point to something else
    return 0;
}