help comparing memory addresses...

[g4143]

This should work, even with the C style casting

Code:

#include <iostream>
using namespace std;

int main()
{
    unsigned variableY;
    int variableX;

    cout << "\nNote: variableX is a signed int while variableY is an unsigned int";
    cout << "\n\nThe size of variableX is: " << sizeof variableX << " bytes";
    cout << "\nThe size of variableY is: " << sizeof variableY << " bytes" << endl;

    cout << "\nThe address of the memory location of variableX: " << &variableX << endl;
    cout << "The address of the memory location of variableY: " << &variableY << endl << endl;

    if ((void*)&variableX < (void*)&variableY)
    {
        if (sizeof(int) == ((long)&variableY - (long)&variableX))
        {
            cout << "They are next to one another in memory!" << endl;
        }
        else
        {
            cout << "They are not adjacent to one another in memory!" << endl;
        }
    }
    else if ((void*)&variableX > (void*)&variableY)
    {
        if (sizeof(int) == ((long)&variableX - (long)&variableY))
        {
            cout << "They are next to one another in memory!" << endl;
        }
        else
        {
            cout << "They are not adjacent to one another in memory!" << endl;
        }
    }
    return 0;
}