Listing 2: Determines class sizes

#include <iostream>
using namespace std;

class base
    {
private:
    int a[10];
    };

class derived : public base
    {
    };

int main()
    {
    cout << "sizeof(base)    == "
            << sizeof(base) << endl;
    cout << "sizeof(derived) == "
        << sizeof(derived) << endl;
    }
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