#include <iostream> 
class A 
{ 
public: 
   A(void){this-> _num = 0;} 
   int A(int num){this-> _num = num;} 
   ~A(void){std::cout << this-> _num;} 
private: 
   int _num;  
}; 
 
int main(void) 
{ 
   A val(100); 
 
   return 0; 
}