Answer to Question #346534 in C++ for Anonymous

Question

Create an abstract class MathSymbol may provide a pure virtual function doOperation(), and create two more classes Plus and Minus implement doOperation() to provide concrete implementations of addition in Plus class and subtraction in Minus class.

Answer 1

#include <iostream>

class MathSymbol {
    public:
    virtual float doOperation(float x, float y) = 0;
};

class Plus: public MathSymbol {
    float doOperation(float x, float y) {
        return (x + y);
    }
};

class Minus: public MathSymbol {
    float doOperation(float x, float y) {
        return (x - y);
    }
};