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A virtual function permits derived classes to replace the implementation given by the base class. The compiler makes sure the replacement is always known as whenever the object in question is actually of the derived class, even if the object is accessed by a base pointer rather than a derived pointer. This permits algorithms in the base class to be replaced in the derived class, even if users don't know about the derived class.
Simple program of c++: int main() { int bushels; float dollars, rate; cout cin >> dollars; cout
Define Multi File Program? While writing large programs we must divide programs up into modules. These would be separate source files and the main() function would be in one fi
Explain the Macros? Preprocessor' is a translation stage that is applied to your source code before the compiler proper gets its hands on it. Usually the preprocessor performs
The for Loop For loop is the controlled form of loop. The general format of this : for( initialize ; test ; update) { statements;
A: you can exploit by overloading standard operators on a class, the intuition of the users of that class. This allow users program in the language of the problem domain instead of
What is abstraction? - Simplified view of an object in user's language is termed as abstraction. - It's the simplest, well-defined interface to an object in OO and C++ which
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Asks the user for an integer. if the number is less than 21, ask them for a number again; repeat this until you get a number bigger than 20. 20 is not an acceptable number. Once yo
Program: Write a program that predicts users' age (0-128 years old) with at most 7 questions. The game starts with asking the user whether he/she is younger or older than G (an
What does it mean to declare a 1. member function as a virtual A: (a) C++ virtual function is member function of any class, whose functionality may be over- ridden in
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