Correct Answer : By making the destructor private.
Explanation :
One can make a c++ program in which a class's object can be created using only the " new "operator, and still, if the user wants and tries to create its object directly, the program will produce a compiler error. To can understand it more clearly, you can consider the following given example.
Example
// in this program, Objects of test can only be created using new
class Test1
{
private:
~Test1() {}
friend void destructTest1(Test1* );
};
// Only this function can destruct objects of Test1
voiddestructTest(Test1* ptr)
{
deleteptr;
}
int main()
{
// create an object
Test1 *ptr = new Test1;
// destruct the object
destructTest1 (ptr);
return 0;
}​
