Which of the following statement is correct about the program given below?

#include<iostream.h>
int CuriousTabTest(int x, int y);
int CuriousTabTest(int x, int y, int z = 5);
int main()
{
    cout<< CuriousTabTest(2, 4) << endl; 
    return 0;
}
int CuriousTabTest(int x, int y)
{
    return x * y;
}
int CuriousTabTest(int x, int y, int z = 5)
{
    return x * y * z; 
}

#include<iostream.h> 
class Base
{
    public:
    char S, A, M; 
    Base(char x, char y)
    {
        S = y - y;
        A = x + x; 
        M = x * x;
    }
    Base(char, char y = 'A', char z = 'B')
    {
        S = y;
        A = y + 1 - 1; 
        M = z - 1;
    }
    void Display(void)
    {
        cout<< S << " " << A << " " << M << endl;
    }
};
class Derived : public Base
{
    char x, y, z; 
    public:
    Derived(char xx = 65, char yy = 66, char zz = 65): 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(0-1); 
    return 0;
}

#include<iostream.h>
void Tester(float xx, float yy = 5.0);
class CuriousTab
{
    float x; 
    float y; 
    public:
    void Tester(float xx, float yy = 5.0)
    {
        x = xx;
        y = yy;
        cout<< ++x % --y; 
    }
};
int main()
{
    CuriousTab objCuriousTab;
    objCuriousTab.Tester(5.0, 5.0);
    return 0; 
}

#include<iostream.h> 
class CuriousTab
{
    int x, y, z; 
    public:
    void Apply(int xx = 12, int yy = 21, int zz = 9)
    {
        x = xx;
        y = yy += 10;
        z = x -= 2;
    }
    void Display(void)
    {
        cout<< x << " " << y << endl; 
    } 
    void SetValue(int xx, int yy)
    {
        Apply(xx, 0, yy);
    }
};
int main()
{
    CuriousTab *pCuriousTab= new CuriousTab;
   (*pCuriousTab).SetValue(12, 20);
    pCuriousTab->Display();
    delete pCuriousTab;
    return 0; 
}

#include<iostream.h>
double CuriousTabFunction(double, double, double = 0, double = 0, double = 0);
int main()
{
    double d = 2.3;
    cout<< CuriousTabFunction(d, 7) << " ";
    cout<< CuriousTabFunction(d, 7, 6) << endl;
    return 0; 
}
double CuriousTabFunction(double x, double p, double q, double r, double s)
{
    return p +(q +(r + s * x)* x) * x;
}

#include<iostream.h> 
class Number
{
    int Num; 
    public:
    Number(int x = 0)
    {
        Num = x;
    }
    void Display(void)
    {
        cout<< Num;
    }
    void Modify(); 
};
void Number::Modify()
{
    int Dec;
    Dec = Num % 13; 
    Num = Num / 13; 
    
         if(Num  > 0 ) Modify()   ; 
         if(Dec == 10) cout<< "A" ; 
    else if(Dec == 11) cout<< "B" ; 
    else if(Dec == 12) cout<< "C" ; 
    else if(Dec == 13) cout<< "D" ;
    else               cout<< Dec ;
}
int main()
{
    Number objNum(130);
    objNum.Modify();
    return 0; 
}

#include<iostream.h> 
class Addition
{
    int x; 
    public: 
    Addition()
    {
        x = 0;
    }       
    Addition(int xx)
    {
        x = xx;
    }
    Addition operator + (int xx = 0)
    {
        Addition objTemp; 
        objTemp.x = x + xx; 
        return(objTemp);
    }
    void Display(void)
    {
        cout<< x << endl;
    }
};
int main()
{
    Addition objA(15), objB;
    objB = objA + 5;
    objB.Display();
    return 0; 
}

#include<iostream.h> 
class CuriousTab
{
    int K; 
    public:
    void CuriousTabFunction(float, int , char);
    void CuriousTabFunction(float, char, char);
    
};
int main()
{
    CuriousTab objIB;
    objIB.CuriousTabFunction(15.09, 'A', char('A' + 'A'));
    return 0;
}
void CuriousTab::CuriousTabFunction(float, char y, char z)
{
    K = int(z);
    K = int(y);
    K = y + z;
    cout<< "K = " << K << endl; 
}

#include<iostream.h> 
class Tab
{
    int x, y; 
    public:
    void show(void);
    void main(void);
};
void Tab::show(void)
{ 
    Tab b;
    b.x = 2;
    b.y = 4;
    cout<< x << " " << y;
}
void Tab::main(void)
{
    Tab b;
    b.x = 6; 
    b.y = 8;
    b.show();
}
int main(int argc, char *argv[])
{
    Tab run;
    run.main();
    return 0; 
}

#include<iostream.h> 
class Base
{
    int x, y; 
    public:
    Base() 
    {
        x = y = 0; 
    } 
    Base(int xx)
    {
        x = xx;
    }
    Base(int p, int q = 10)
    {
        x = p + q;
        y = q; 
    } 
    void Display(void)
    {
        cout<< x << " " << y << endl;
    } 
}objDefault(1, 1);

class Derived: public Base
{
    Base obj; 
    public:
    Derived(int xx, int yy): Base(xx, xx + 1)
    { }
    Derived(Base objB = objDefault)
    { } 
}; 
int main()
{
    Derived objD(5, 3);
    Derived *ptrD = new Derived(objD);
    ptrD->Display();
    delete ptrD;
    return 0; 
}

#include<iostream.h> 
class CuriousTab
{
    int x; 
    float y; 
    public:
    void CuriousTabFunction(int = 0, float = 0.00f, char = 'A');
    void CuriousTabFunction(float, int = 10.00, char = 'Z');
    void CuriousTabFunction(char, char, char);
};
int main()
{
    CuriousTab objCuriousTab;
    objCuriousTab.CuriousTabFunction(10 * 1.0, int(56.0)); 
    return 0;
}
void CuriousTab::CuriousTabFunction(int xx, float yy, char zz)
{
    x = xx + int(yy);
    cout<< "x = " << x << endl;
}
void CuriousTab::CuriousTabFunction(float xx, int yy, char zz)
{
    x = zz + zz;
    y = xx + yy;
    cout<< " x = " << x << endl;
}
void CuriousTab::CuriousTabFunction(char xx, char yy, char zz)
{
    x = xx + yy + zz; 
    y = float(xx * 2); 
    cout<< " x = " << x << endl;
}