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

#include<iostream.h>
const double CuriousTabConstant(const int, const int = 0);
int main()
{
    const int c = 2 ;
    cout<< CuriousTabConstant(c, 10)<< " "; 
    cout<< CuriousTabConstant(c, 20)<< endl; 
    return 0;
}
const double CuriousTabConstant(const int x, const int y)
{
    return( (y + (y * x) * x % y) * 0.2);
}

#include<iostream.h> 
struct MyData
{
    public:
    int Addition(int a, int b = 10)
    {
        return (a *= b + 2);
    }
    float Addition(int a, float b);
};
int main()
{
    MyData data;
    cout<<data.Addition(1)<<" ";
    cout<<data.Addition(3, 4);
    return 0; 
}

#include<iostream.h>
long CuriousTabFunction(int x, int y = 5, float z = 5)
{
    return(++x * ++y + (int)++z);
}
int main()
{
    cout<< CuriousTabFunction(20, 10); 
    return 0;
}

#include<iostream.h> 
class AreaFinder
{
    float l, b, h; 
    float result; 
    public:
    AreaFinder(float hh = 0, float ll = 0, float bb = 0) 
    {
        l = ll; 
        b = bb; 
        h = hh;
    }
    void Display(int ll)
    {
        if(l = 0)
            result = 3.14f * h * h; 
        else
            result = l * b; 
        cout<< result; 
    }
};
int main()
{
    AreaFinder objAF(10, 10, 20);
    objAF.Display(0); 
    return 0; 
}

#include<iostream.h>
#include<string.h> 
class CuriousTab
{
    char txtMsg[50]; 
    public:
    CuriousTab(char *str = NULL)
    {
    if(str != NULL)
       strcpy(txtMsg, str);
    }
    int CuriousTabFunction(char ch);
};
int CuriousTab::CuriousTabFunction(char ch)
{
    static int i = 0;
    if(txtMsg[i++] == ch)
        return strlen((txtMsg + i)) - i;
    else
        return CuriousTabFunction(ch);
}
int main()
{
    CuriousTab objCuriousTab("Welcome to CuriousTab.com!");
    cout<< objCuriousTab.CuriousTabFunction('t');
    return 0;
}

#include<iostream.h>
int CuriousTabFunction(int a, int b = 3, int c = 3)
{
    cout<< ++a * ++b * --c ; 
    return 0;
}
int main()
{
    CuriousTabFunction(5, 0, 0); 
    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;
}

#include<iostream.h> 
struct MyStructure
{
    class MyClass
    {
        public:
        void Display(int x, float y = 97.50, char ch = 'a')
        {
            cout<< x << " " << y << " " << ch;
        }
    }Cls; 
}Struc;
 
int main()
{
    Struc.Cls.Display(12, 'b');
    return 0; 
}

#include<iostream.h> 
static int b = 0; 
void DisplayData(int *x, int *y = &b)
{
    cout<< *x << " " << *y;
}
int main()
{
    int a = 10, b = 20 ;
    DisplayData(&a, &b);
    return 0; 
}

#include<iostream.h> 
class CuriousTab
{
    int Num; 
    public:
    CuriousTab(int x)
    {
        Num = x;
    }
    int CuriousTabFunction(void);
};
int CuriousTab::CuriousTabFunction(void)
{
    static int Sum = 0; 
    int Dec;
    Dec = Num % 10; 
    Num = Num / 10; 
    if((Num / 100)) CuriousTabFunction(); 
    Sum  = Sum * 10 + Dec; 
    return Sum;
}
int main()
{
    CuriousTab objCuriousTab(12345);
    cout<< objCuriousTab.CuriousTabFunction();
    return 0; 
}

#include<iostream.h> 
class CuriousTabArray
{
    int Matrix[3][3]; 
    public:
    CuriousTabArray()
    {
        for(int i = 0; i<3; i++)
           for(int j = 0; j < 3; j++) 
              Matrix[j][i] = i + j; 
    }
    void Display(void)
    {
        for(int i = 0; i < 3; i++)
           for(int j = 0; j < 3; j++) 
              cout<< Matrix[j][i] << " "; 
    } 
}; 
int main()
{
    CuriousTabArray objCuriousTab;
    objCuriousTab.Display();
    return 0; 
}