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

#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;
}