What will be the output of the following program?

#include<iostream.h> 
void MyFunction(int a, int b = 40)
{
    cout<< " a = "<< a << " b = " << b << endl;
}
int main()
{
    MyFunction(20, 30);
    return 0; 
}

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

#include<iostream.h> 
class BaseCounter
{
    protected:
    long int count;

    public:
    void CountIt(int x, int y = 10, int z = 20)
    {
        count = 0;
        cout<< x << " " << y << " " << z << endl;
    } 
    BaseCounter()
    {
        count = 0;
    }
    BaseCounter(int x)
    {
        count = x ;
    } 
}; 
class DerivedCounter: public BaseCounter
{
    public:
    DerivedCounter()
    { }
    DerivedCounter(int x): BaseCounter(x) 
    { }
};
int main()
{
    DerivedCounter objDC(30); 
    objDC.CountIt(40, 50); 
    return 0; 
}

#include<iostream.h> 
class PowerFinder
{
    public:
    void Power(int x = 1, int y = 1)
    {
        int P = 1, i = 1;
        while(++i <= y)
        {
            P *= x;
        }
        cout<< P << endl; 
    } 
};
int main()
{
    PowerFinder FP; 
    FP.Power(2, 6); 
    return 0;
}

#include<iostream.h> 
int main()
{
    float Amount;
    float Calculate(float P = 5.0, int N = 2, float R = 2.0);
    Amount = Calculate(); 
    cout<< Amount << endl; 
    return 0;
}

float Calculate(float P, int N, float R)
{
    int Year = 1;
    float Sum = 1 ;
    Sum = Sum * (1 + P * ++N * R);
    Year =  (int)(Year + Sum);
    return Year; 
}

#include<iostream.h> 
class TestDrive
{
    int x; 
    public:
    TestDrive(int xx)
    {
        x = xx;
    }
    int DriveIt(void);
};
int TestDrive::DriveIt(void)
{
    static int value = 0;
    int m;
    m = x % 2;
    x = x / 2;
    if((x / 2)) DriveIt(); 
    value = value + m * 10; 
    return value;
}
int main()
{
    TestDrive TD(1234);
    cout<< TD.DriveIt() * 10 << endl;
    return 0; 
}

#include<iostream.h> 
typedef void(*FunPtr)(int);
int Look(int = 10, int = 20);
void Note(int); 
int main()
{
    FunPtr ptr = Note;
    (*ptr)(30); 
    return 0;
}
int Look(int x, int y)
{
    return(x + y % 20);
}
void Note(int x)
{
    cout<< Look(x) << endl;
}

#include<iostream.h>
long GetNumber(long int Number)
{
    return --Number;
}
float GetNumber(int Number)
{
    return ++Number;
}
int main()
{
    int x = 20;
    int y = 30;
    cout<< GetNumber(x) << " ";
    cout<< GetNumber(y) ;
    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>
#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> 
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; 
}