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Pure Virtual Functions
An abstract class is one, which is used just for deriving some other classes. No object of this class is declared and used in the program. Likewise, there are pure virtual functions which themselves won't be used. Consider the above example with some changes.
class Shape
{
public :
virtual void print() = 0; // Pure virtual
function
};
class Triangle : public Shape
void print()
cout << " I am a Triangle " << endl;
}
class Circle : public Shape
cout << " I am a Circle " << endl;
void main()
Shape S;
Triangle T;
Circle C;
Shape *ptr;
ptr = &T;
ptr -> print();
ptr = &C;
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A: The inline keyword tells the compiler to substitute the code in the function de_nition for each instance of a function call. Though, substitution takes place only at the compile
smugglers transfer
(a) Write a recursive procedure (digits n) that computes the number of digits in the integer n using a linear recursive process. For example, (digits 42) should return 2 and (digit
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Variable Declaration This declaration of variables in the C language is permitted only in the starting of their block, prior to executable program statements. In C++ declaratio
Public derivation Public derivations are much more common than private derivations. In this situation: The private members inherited from the base class are inaccessible
Can I explicitly call a destructor if I've allocated my object with new?
array of class objects and single inheritance
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