#include<iostream.h> 
static double gDouble; 
static float  gFloat; 
static double gChar; 
static double gSum = 0; 
class BaseOne
{
    public:
    void Display(double x = 0.0, float y = 0.0, char z = 'A')
    {
        gDouble = x;
        gFloat  = y;
        gChar   = int(z);
        gSum    = gDouble + gFloat + gChar;
        cout << gSum; 
    }
};
class BaseTwo
{
    public: 
    void Display(int x = 1, float y = 0.0, char z = 'A')
    {
        gDouble = x;
        gFloat  = y;
        gChar   = int(z); 
        gSum    = gDouble + gFloat + gChar;
        cout << gSum;
    }
};
class Derived : public BaseOne, BaseTwo
{
    void Show()
    {
        cout << gSum;
    } 
}; 
int main()
{
    Derived objDev;
    objDev.BaseTwo::Display(10, 20, 'Z');
    return 0; 
}#include<iostream.h> 
class Base
{
    public:
    int S, A, M; 
    Base(int x, int y)
    {
        S = y - y;
        A = x + x; 
        M = x * x;
    }
    Base(int, int y = 'A', int z = 'B')
    {
        S = y;
        A = y + 1 - 1; 
        M = z - 1;
    }
    void Display(void)
    {
        cout<< S << " " << A << " " << M << endl;
    }
};
class Derived : public Base
{
    int x, y, z; 
    public:
    Derived(int xx = 65, int yy = 66, int zz = 67): Base(x)
    {
        x = xx; 
        y = yy;
        z = zz;
    }
    void Display(int n)
    {
        if(n)
            Base::Display(); 
        else
            cout<< x << " " << y << " " << z << endl; 
    }
};
int main()
{
    Derived objDev; 
    objDev.Display(-1); 
    return 0;
}