Answer to Question #236104 in C++ for SOM

Question

When do need to include the explicit destructor in a class?Explain with example. 

 

Write a program to define a class A with data member x and a parameterised constructor to initialize it. Define a class B with data member y and a parameterised constructor to initialize it. Write a function to calculate and print LCM of x & y.

Answer 1

We need to include the explicit destructor in a class only when the object is placed at particular location in memory by using placement new.

1. Example: Fee* p = new Fee();

#include<iostream>
using namespace std;
class AB
{
    private:
	int a,b;
	public:
		// parametarized constructor
   AB (int x,int y)
     {
         a = x;
         b = y;
      }


void calculate() {
	int x=a, y=b;
        while (y != 0) {
            int t = y;
            y = x % y;
            x = t;
        }
        
        int hcf = x;
        int lcm = (a * b) / hcf;
        cout<<"LCM = " <<lcm;
    }
};
    
 int main() 
 {
        int x,y;
        cout<<"Enter first number: ";
        cin>>x;
        cout<<"Enter second number: ";
        cin>>y;
        AB obj(x,y);
        obj.calculate();
}