6. In the following class Shape, the data members are integers and some function

ID: 644019 • Letter: 6

Question

6. In the following class Shape, the data members are integers and some function members return an integer value.

rewrite the template class below:

class Shape

{ private:

int numOfSides;

int lenOfShortestSide;

int circumference;

public;

Shape::Shape()

void setData(int num, int length)

{ numOfSides = num;

lenOfShortestSide = length;

}

int getCircumference()

{ int circumf;

cin >> circumf;

return circumf;

}

};

a. Rewrite the class as a template that accepts any numeric type for these members:

b. Write two statements to instantiate two objects of different data types in the implementation file:

c. Write two function calls to the template class, from the implementation file, one to setData(), theother to getCircumference() for the two different objects instantiated above:

Explanation / Answer

// a. Rewrite the class as a template that accepts any numeric type for these members:
template<typename dataType>
class Shape
{     private:
            dataType numOfSides;
            dataType lenOfShortestSide;
            dataType circumference;
      public:
      Shape(){}
            void setData(dataType num, dataType length)
            {     numOfSides = num;
                  lenOfShortestSide = length;
            }
            dataType getCircumference()
            {     dataType circumf;
                  cin >> circumf;
                  return circumf;
            }
};
//b. Write two statements to instantiate two objects of different data types in the implementation file:
Shape<int> S_int;
Shape<double> S_double;
// c. Write two function calls to the template class, from the implementation file, one to setData(),
// theother to getCircumference() for the two different objects instantiated above
S_int.setData(4,5);
S_int.getCircumference();
S_double.setData(2,5);
S_double.getCircumference();

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6. In the following class Shape, the data members are integers and some function

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Explanation / Answer

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