Q1: What will be the output of the following program?

#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; 
}